texdraw non-update

git-svn-id: svn://tug.org/texlive/trunk@31894 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 1092 insertions, 1091 deletions

diff --git a/Master/texmf-dist/doc/info/texdraw.info b/Master/texmf-dist/doc/info/texdraw.info
index 2458b4f3b33..51eb61b36f7 100644
--- a/Master/texmf-dist/doc/info/texdraw.info
+++ b/Master/texmf-dist/doc/info/texdraw.info
@@ -1,16 +1,16 @@
-This is texdraw, produced by makeinfo version 4.5 from texdraw.texi.
+This is texdraw, produced by makeinfo version 5.1 from texdraw.texi.
 
-  This file documents TeXdraw, a system for producing PostScript
-drawings from TeX.
+This file documents TeXdraw, a system for producing PostScript drawings
+from TeX.
 
-  Copyright (C) 1993-95 Peter Kabal
+   Copyright (C) 1993-95 Peter Kabal
 
-  Permission is granted to make and distribute verbatim copies of this
+   Permission is granted to make and distribute verbatim copies of this
 manual provided the copyright notice and this permission notice are
 preserved on all copies.
 
-  Permission is granted to copy and distribute modified versions of this
-manual under the conditions for verbatim copying, provided that the
+   Permission is granted to copy and distribute modified versions of
+this manual under the conditions for verbatim copying, provided that the
 entire resulting derived work is distributed under the terms of a
 permission notice identical to this one.
 
@@ -20,10 +20,10 @@ File: texdraw,  Node: Top,  Next: Introduction,  Prev: (dir),  Up: (dir)
 TeXdraw
 *******
 
-  TeXdraw is a collection of macros that allow drawings to be created
-from _within_ TeX.
+TeXdraw is a collection of macros that allow drawings to be created from
+_within_ TeX.
 
-  This is edition 2.0 of the TeXdraw documentation.
+   This is edition 2.0 of the TeXdraw documentation.
 
 * Menu:
 
@@ -41,7 +41,7 @@ Indices
 * Concept Index::
 * Command Index::
 
- --- The Detailed Node Listing ---
+ -- The Detailed Node Listing --
 
 Introduction
 
@@ -108,35 +108,35 @@ Concept Index
 
 File: texdraw,  Node: Introduction,  Next: TeXdraw Commands,  Prev: Top,  Up: Top
 
-Introduction
-************
+1 Introduction
+**************
 
-  TeX is a powerful typesetting program which allows for complex text
+TeX is a powerful typesetting program which allows for complex text
 layouts but by itself lacks a general graphics capability.  However,
 when coupled with an appropriate printer driver program, external
 graphics files can be inserted into the printed document.  In this mode,
-TeX is instructed to leave space for a drawing.  The drawing is
-inserted by the printer driver program.  The TeXdraw macros described
-here generate the external graphics file from within TeX and generate
-the instructions to the the print driver program to position the
-graphics at the appropriate position on the page.
+TeX is instructed to leave space for a drawing.  The drawing is inserted
+by the printer driver program.  The TeXdraw macros described here
+generate the external graphics file from within TeX and generate the
+instructions to the the print driver program to position the graphics at
+the appropriate position on the page.
 
-  TeXdraw consists of a set of TeX macros that create line drawings and
+   TeXdraw consists of a set of TeX macros that create line drawings and
 other figures.  The drawing primitives include solid lines, patterned
 lines, Bezier curves, circles and arrows.  Other commands allow for the
 filling of a region with a gray level.  The drawing commands generate
 PostScript code.  This limits TeXdraw to systems which use PostScript
 printers.  TeXdraw also provides commands to position TeX text,
-including mathematics, on the drawing.  The final drawing, with text
-and graphics, can be positioned on the page like any other TeX box.
+including mathematics, on the drawing.  The final drawing, with text and
+graphics, can be positioned on the page like any other TeX box.
 
-  The basic TeXdraw macros for TeX use the `\special' syntax recognized
-by the printer driver program `dvips'.  However, when invoked as a
+   The basic TeXdraw macros for TeX use the '\special' syntax recognized
+by the printer driver program 'dvips'.  However, when invoked as a
 LaTeX2e package, the TeXdraw macros can be used with any of the
-PostScript printer driver programs supported by the standard `graphics'
+PostScript printer driver programs supported by the standard 'graphics'
 package for LaTeX2e.
 
-  The basic TeXdraw macros provide only simple drawing commands.
+   The basic TeXdraw macros provide only simple drawing commands.
 However, TeXdraw provides a drawing segment environment which allows
 parameter changes and coordinate scaling changes to be kept local to the
 drawing segment.  This facility, together with TeX's macro capabilities
@@ -150,25 +150,25 @@ more complex graphics entities from simpler elements.
 
 File: texdraw,  Node: Distribution,  Up: Introduction
 
-Distribution information
-========================
+1.1 Distribution information
+============================
 
-  The TeXdraw routines are provided free of charge without warranty of
-any kind.  Note that the TeXdraw routines are copyrighted.  They may be
+The TeXdraw routines are provided free of charge without warranty of any
+kind.  Note that the TeXdraw routines are copyrighted.  They may be
 distributed freely provided that the recipients also acquire the right
-to distribute them freely.  The notices to this effect must be
-preserved when the source files are distributed.
+to distribute them freely.  The notices to this effect must be preserved
+when the source files are distributed.
 
 
 File: texdraw,  Node: TeXdraw Commands,  Next: Drawing Segments and Scaling,  Prev: Introduction,  Up: Top
 
-Using the TeXdraw Commands
-**************************
+2 Using the TeXdraw Commands
+****************************
 
-  The main TeXdraw macros (commands) are defined in the file
-`texdraw.tex'.  These macros may be used directly in TeX.  The file
-`texdraw.sty' provides an interface for use with LaTeX2e.  The
-following sections describe the basic commands for TeXdraw.
+The main TeXdraw macros (commands) are defined in the file
+'texdraw.tex'.  These macros may be used directly in TeX.  The file
+'texdraw.sty' provides an interface for use with LaTeX2e.  The following
+sections describe the basic commands for TeXdraw.
 
 * Menu:
 
@@ -185,29 +185,29 @@ following sections describe the basic commands for TeXdraw.
 
 File: texdraw,  Node: Accessing TeXdraw,  Next: Command syntax,  Up: TeXdraw Commands
 
-Accessing TeXdraw
-=================
+2.1 Accessing TeXdraw
+=====================
 
-  The form of the user command to run the TeX program depends on which
+The form of the user command to run the TeX program depends on which
 version of TeX is being used, and which other macro packages are
 preloaded as format files.  Typically, installations have at least two
 versions of TeX -- plain TeX which includes basic typesetting macros
-(usually invoked as `tex') and LaTeX2e which includes the LaTeX2e
-typesetting macros (usually invoked as `latex').  An older version of
+(usually invoked as 'tex') and LaTeX2e which includes the LaTeX2e
+typesetting macros (usually invoked as 'latex').  An older version of
 LaTeX, version 2.09, may also be available.  The TeXdraw macros can be
 used with plain TeX and with either version of LaTeX.
 
-  For use with plain TeX, the user must read in the TeXdraw macros from
-the file `texdraw.tex'.
+   For use with plain TeX, the user must read in the TeXdraw macros from
+the file 'texdraw.tex'.
      \input texdraw            % Read in the TeXdraw macros
       ...
      \btexdraw
        ...                     % TeXdraw commands to generate a drawing
      \etexdraw
 
-  For use with LaTeX version 2.09, the user reads in the TeXdraw macros
-from the file `texdraw.tex' and optionally defines the
-`\begin{texdraw}' / `\end{texdraw}' environment.
+   For use with LaTeX version 2.09, the user reads in the TeXdraw macros
+from the file 'texdraw.tex' and optionally defines the '\begin{texdraw}'
+/ '\end{texdraw}' environment.
      \documentstyle[11pt]{article}  % Article style with the 11pt size options
      ...
      \input texdraw            % Read in the TeXdraw macros
@@ -219,14 +219,14 @@ from the file `texdraw.tex' and optionally defines the
      ...
      \end{document}
 
-  For use with LaTeX2e, the user must load the `texdraw' package (file
-`texdraw.sty').  This package file defines the `\begin{texdraw}' /
-`\end{texdraw}' environment, brings in the standard `graphics' package
-and reads in the file `texdraw.tex' containing the definitions of the
+   For use with LaTeX2e, the user must load the 'texdraw' package (file
+'texdraw.sty').  This package file defines the '\begin{texdraw}' /
+'\end{texdraw}' environment, brings in the standard 'graphics' package
+and reads in the file 'texdraw.tex' containing the definitions of the
 TeXdraw macros.
      \documentclass[11pt]{article}  % Article class with the 11pt size option
      \usepackage{texdraw}           % TeXdraw commands
-     
+
      \begin{document}
       ...
      \begin{texdraw}
@@ -235,272 +235,253 @@ TeXdraw macros.
       ...
      \end{document}
 
-  As the TeXdraw commands are processed by TeX, an intermediate
+   As the TeXdraw commands are processed by TeX, an intermediate
 PostScript file is generated.  The intermediate PostScript has a name of
-the form `NAME.ps1'.  The name part is derived from the name of the
-main TeX file being processed.  If more than one drawing is produced,
-the digit in the file name extension is incremented.(1)
+the form 'NAME.ps1'.  The name part is derived from the name of the main
+TeX file being processed.  If more than one drawing is produced, the
+digit in the file name extension is incremented.(1)
 
-  The TeXdraw commands to produce a drawing are inserted between
-`\btexdraw' and `\etexdraw' commands, or for LaTeX, between
-`\begin{texdraw}' and `\end{texdraw}' commands.  This results in a TeX
+   The TeXdraw commands to produce a drawing are inserted between
+'\btexdraw' and '\etexdraw' commands, or for LaTeX, between
+'\begin{texdraw}' and '\end{texdraw}' commands.  This results in a TeX
 box of appropriate size containing the drawing generated by the TeXdraw
 commands.  The TeXdraw box can be positioned in a document like any
 other TeX box.
 
-  The `\centertexdraw{...}' macro centers the box generated by TeXdraw.
+   The '\centertexdraw{...}' macro centers the box generated by TeXdraw.
 The vertical space taken up is equal to the vertical size of the
-drawing.  The `\centertexdraw' macro is normally used in vertical mode
-(between paragraphs).  A `\par' command (a blank line will do also)
-before a `\centertexdraw' command will terminate horizontal mode and
+drawing.  The '\centertexdraw' macro is normally used in vertical mode
+(between paragraphs).  A '\par' command (a blank line will do also)
+before a '\centertexdraw' command will terminate horizontal mode and
 return to vertical mode.  For LaTeX, a structured equivalent to the
-`\centertexdraw{...}' command is shown below.
+'\centertexdraw{...}' command is shown below.
      \begin{center}
      \begin{texdraw}
        ...
      \end{texdraw}
      \end{center}
 
-  The `\everytexdraw' command can be used to define a set of TeXdraw
+   The '\everytexdraw' command can be used to define a set of TeXdraw
 commands that will be executed at the beginning of every TeXdraw
-drawing.  It is invoked as `\everytexdraw{ ...}', with the desired
+drawing.  It is invoked as '\everytexdraw{ ...}', with the desired
 TeXdraw commands as arguments.
 
-`\btexdraw'
+'\btexdraw'
      Start a TeXdraw drawing.  The drawing is terminated with an
-     `\etexdraw' command.
-
-`\etexdraw'
-     End a TeXdraw drawing started with a `\btexdraw' command.  The
+     '\etexdraw' command.
+'\etexdraw'
+     End a TeXdraw drawing started with a '\btexdraw' command.  The
      resulting TeXdraw drawing is placed in a box with height equal to
      the height of the drawing and width equal to the width of the
      drawing.  The depth of the box is zero.
-
-`\begin{texdraw}'
+'\begin{texdraw}'
      Start a TeXdraw drawing.  The drawing is terminated with an
-     `\end{texdraw}' command.  This command is for use with LaTeX.
-
-`\end{texdraw}'
-     End a TeXdraw drawing started with a `\begin{texdraw}' command.
+     '\end{texdraw}' command.  This command is for use with LaTeX.
+'\end{texdraw}'
+     End a TeXdraw drawing started with a '\begin{texdraw}' command.
      The resulting TeXdraw drawing is placed in a box with height equal
      to the height of the drawing and width equal to the width of the
      drawing.  The depth of the box is zero.  This command is for use
      with LaTeX.
-
-`\centertexdraw{ ... }'
+'\centertexdraw{ ... }'
      Center a TeXdraw box horizontally.  The argument contains TeXdraw
-     commands.  The resulting box has the horizontal size `\hsize' and
+     commands.  The resulting box has the horizontal size '\hsize' and
      height equal to the height of the drawing.
-
-`\everytexdraw{ ... }'
+'\everytexdraw{ ... }'
      Specify TeXdraw commands to be executed at the beginning of every
      TeXdraw drawing.
 
-  ---------- Footnotes ----------
+   ---------- Footnotes ----------
 
-  (1) After the ninth PostScript file, the name of the intermediate
-PostScript file takes the form `NAME.p10', with the number increasing
+   (1) After the ninth PostScript file, the name of the intermediate
+PostScript file takes the form 'NAME.p10', with the number increasing
 from 10 with each file.
 
 
 File: texdraw,  Node: Command syntax,  Next: TeXdraw coordinates,  Prev: Accessing TeXdraw,  Up: TeXdraw Commands
 
-Command syntax
-==============
+2.2 Command syntax
+==================
 
-  Generally TeXdraw commands that take a single argument need a
+Generally TeXdraw commands that take a single argument need a
 terminating blank or newline after the argument.  Arguments that are
 self-delimiting, such as coordinates within parentheses and text within
 braces, do not need the terminating blank.  However, even when not
 needed by the defining syntax of the command, blanks following command
 arguments are allowed and ignored within the TeXdraw environment.
 
-  On entering the TeXdraw environment, TeX is in internal vertical mode
-(vertical mode inside a `\vbox').  In this mode, spaces can be placed
+   On entering the TeXdraw environment, TeX is in internal vertical mode
+(vertical mode inside a '\vbox').  In this mode, spaces can be placed
 freely between commands.  However, any other extraneous input that
 generates output that is not part of the TeXdraw environment is
 disallowed.
 
-  Blank lines are interpreted as paragraph breaks, equivalent to a
-`\par' command.  The TeXdraw macro `\centertexdraw' is defined with the
-`\long' attribute to allow `\par' commands and blank lines to be
-interspersed between TeXdraw commands.  The `\btexdraw' and `\etexdraw'
-commands also allow `\par' command and blank lines to be included.
+   Blank lines are interpreted as paragraph breaks, equivalent to a
+'\par' command.  The TeXdraw macro '\centertexdraw' is defined with the
+'\long' attribute to allow '\par' commands and blank lines to be
+interspersed between TeXdraw commands.  The '\btexdraw' and '\etexdraw'
+commands also allow '\par' command and blank lines to be included.
 
 
 File: texdraw,  Node: TeXdraw coordinates,  Next: Coordinate specification,  Prev: Command syntax,  Up: TeXdraw Commands
 
-TeXdraw coordinates
-===================
+2.3 TeXdraw coordinates
+=======================
 
-  The TeXdraw coordinate system has increasing X to the right and
+The TeXdraw coordinate system has increasing X to the right and
 increasing Y upward.  The coordinates (without the unit) are floating
 point numbers.  Integer values can be written without a decimal point.
 The size of the drawing is determined by the maximum excursions of the
 coordinates specified in TeXdraw commands.
 
-  Consider the following example of TeXdraw commands to draw a simple
+   Consider the following example of TeXdraw commands to draw a simple
 figure.
      \centertexdraw{
        \drawdim cm  \linewd 0.02
        \move(2 2) \lvec(3 3) \lvec(2 4) \lvec(1 3) \lvec(2 2)
        \textref h:C v:C \htext(2 3){$\sum \rho_n$}
      }
-This drawing uses units of centimetres, with a line width of 0.02
-cm.  The X coordinate ranges between 1 and 3 while the Y coordinate
-ranges between 2 and 4.  When included into a document, the size of the
-drawing is 2 cm by 2 cm.  The drawing is placed in a TeX box, with the
-lower lefthand corner of the box corresponding to TeXdraw coordinate
-`(1 2)' and the upper righthand corner at `(3 4)'.  The
-`\centertexdraw' command centers the drawing horizontally.  The
-`\textref' command controls the centering of the text.  The text in
-this drawing is centered (both horizontally and vertically) at the
-coordinate `(2 3)'.
+   This drawing uses units of centimetres, with a line width of 0.02 cm.
+The X coordinate ranges between 1 and 3 while the Y coordinate ranges
+between 2 and 4.  When included into a document, the size of the drawing
+is 2 cm by 2 cm.  The drawing is placed in a TeX box, with the lower
+lefthand corner of the box corresponding to TeXdraw coordinate '(1 2)'
+and the upper righthand corner at '(3 4)'.  The '\centertexdraw' command
+centers the drawing horizontally.  The '\textref' command controls the
+centering of the text.  The text in this drawing is centered (both
+horizontally and vertically) at the coordinate '(2 3)'.
 
 
 File: texdraw,  Node: Coordinate specification,  Next: Line vectors,  Prev: TeXdraw coordinates,  Up: TeXdraw Commands
 
-Coordinate specification
-========================
+2.4 Coordinate specification
+============================
 
-  Coordinates are specified within parentheses, with blanks (but no
-comma) between the values.  Leading blanks and trailing blanks are
-permitted within the parentheses.  The coordinates refer to units,
-which are specified by the `\drawdim' command.  The default is inches,
-but any valid TeX dimension unit can be specified.  Symbolic
-specification of saved coordinate values will be discused later (*note
-Saving positions::).
+Coordinates are specified within parentheses, with blanks (but no comma)
+between the values.  Leading blanks and trailing blanks are permitted
+within the parentheses.  The coordinates refer to units, which are
+specified by the '\drawdim' command.  The default is inches, but any
+valid TeX dimension unit can be specified.  Symbolic specification of
+saved coordinate values will be discused later (*note Saving
+positions::).
 
-`\drawdim DIM'
+'\drawdim DIM'
      Set the units to DIM.  The argument DIM can be any valid TeX
-     dimension unit.  The units are used to interpret coordinate
-     values.  Examples of valid units: `cm', `mm', `in', `pt', and `bp'.
+     dimension unit.  The units are used to interpret coordinate values.
+     Examples of valid units: 'cm', 'mm', 'in', 'pt', and 'bp'.
 
-  Examples of coordinate and scaling specifications:
-`\drawdim {cm} \move(2 2)'
+   Examples of coordinate and scaling specifications:
+'\drawdim {cm} \move(2 2)'
      Set the units to centimetres, move to a position 2 cm to the right
      and 2 cm up from the origin of the drawing coordinate system.
-
-`\drawdim bp'
+'\drawdim bp'
      Set the units to big points.
-
-`\lvec ( 2.2 +5.5) \lvec(2.3 -2) \lvec(2.2 5.4 )'
+'\lvec ( 2.2 +5.5) \lvec(2.3 -2) \lvec(2.2 5.4 )'
      Examples of acceptable coordinate specifications.
 
 
 File: texdraw,  Node: Line vectors,  Next: TeX text,  Prev: Coordinate specification,  Up: TeXdraw Commands
 
-Line vectors
-============
+2.5 Line vectors
+================
 
-  TeXdraw implements moves, line vectors and arrow vectors.  There are
+TeXdraw implements moves, line vectors and arrow vectors.  There are
 both absolute and relative motion versions of these vector commands.
 TeXdraw maintains a current position.  Lines are drawn from the current
 position to a new coordinate, with the new coordinate becoming the new
 current position.  An explicit move can be used to establish a new
-current position.  The position `(0 0)' is used if there is no move to
+current position.  The position '(0 0)' is used if there is no move to
 an initial current position.
 
-  The `\move' and `\rmove' commands establish a new current position
-without drawing a line.  The `\lvec' and `\rlvec' commands draw a line
+   The '\move' and '\rmove' commands establish a new current position
+without drawing a line.  The '\lvec' and '\rlvec' commands draw a line
 from the current position to a new position, which then becomes the new
-current position.  The `\avec' and `\ravec' commands draw a line with
-an arrowhead from the current position to a new coordinate, which then
+current position.  The '\avec' and '\ravec' commands draw a line with an
+arrowhead from the current position to a new coordinate, which then
 becomes the new current position.  The tip of the arrow is at the new
 current position.  The direction of the arrow follows the direction of
 the line.  Since this direction is undefined for zero length vectors,
-these are not allowed for `\avec' or `\ravec'.  Zero length arrow
-vectors will generate a PostScript print error: `undefinedresult'.  For
+these are not allowed for '\avec' or '\ravec'.  Zero length arrow
+vectors will generate a PostScript print error: 'undefinedresult'.  For
 any non-zero length vector, the full size arrowhead is drawn, even if
 that arrowhead is longer than the line length.
 
-  The absolute motion versions of these commands specify the coordinate
+   The absolute motion versions of these commands specify the coordinate
 of the final position.
 
-`\move (X Y)'
-     Move to coordinate `(X Y)'.  The new current position is `(X Y)'.
-
-`\lvec (X Y)'
-     Draw a line from the current position to coordinate `(X Y)'.  The
-     new current position is `(X Y)'.
-
-`\avec (X Y)'
-     Draw a line with an arrowhead from the current position to `(X
-     Y)'.  The new current position is `(X Y)'.  The arrowhead is
-     aligned with the line, with the tip at `(X Y)'.
-
-  The relative motion versions of these commands interpret the
+'\move (X Y)'
+     Move to coordinate '(X Y)'.  The new current position is '(X Y)'.
+'\lvec (X Y)'
+     Draw a line from the current position to coordinate '(X Y)'.  The
+     new current position is '(X Y)'.
+'\avec (X Y)'
+     Draw a line with an arrowhead from the current position to '(X Y)'.
+     The new current position is '(X Y)'.  The arrowhead is aligned with
+     the line, with the tip at '(X Y)'.
+
+   The relative motion versions of these commands interpret the
 coordinates as displacements relative to the current position.  Given
-the displacements `(DX DY)' as a parameter, each of the relative motion
+the displacements '(DX DY)' as a parameter, each of the relative motion
 commands moves DX units in the X direction and DY units in the Y
 direction.
 
-`\rmove (DX DY)'
+'\rmove (DX DY)'
      Move from the current position, DX units in the X direction and DY
      units in the Y direction.  The final position becomes the new
      current position.
-
-`\rlvec (DX DY)'
+'\rlvec (DX DY)'
      Draw a line from the current position, DX units in the X direction
      and DY units in the Y direction.  The final position becomes the
      new current position.
-
-`\ravec (DX DY)'
+'\ravec (DX DY)'
      Draw a line with an arrowhead from the current position, DX units
      in the X direction and Y units in the Y direction.  The final
      position becomes the new current position.  The arrowhead is
      aligned with the line, with the tip at the new current position.
 
-  Lines can be customized with commands to change the line width, line
+   Lines can be customized with commands to change the line width, line
 pattern and line gray level rendition.  In addition, commands for
 changing the type and size of the arrowhead are available.
 
-`\linewd WIDTH'
+'\linewd WIDTH'
      Set the line width to WIDTH units.  Initially WIDTH is 0.01 inches
      (corresponding to 3 pixels at 300 pixels to the inch).
-
-`\lpatt (PATTERN)'
-     Set lines to have the pattern `(PATTERN)'.  A pattern is a
-     sequence of on/off lengths separated by blanks and enclosed in
-     parentheses.  The lengths alternately specify the length of a dash
-     and the length of a gap between dashes.  Each length is
-     interpreted using the current scaling and drawing units.  The
-     pattern is used cyclically.  The empty pattern signifies a solid
-     line.  The initial line pattern is a solid line, corresponding to
-     the empty pattern `\lpatt ()'.
-
-`\setgray LEVEL'
+'\lpatt (PATTERN)'
+     Set lines to have the pattern '(PATTERN)'.  A pattern is a sequence
+     of on/off lengths separated by blanks and enclosed in parentheses.
+     The lengths alternately specify the length of a dash and the length
+     of a gap between dashes.  Each length is interpreted using the
+     current scaling and drawing units.  The pattern is used cyclically.
+     The empty pattern signifies a solid line.  The initial line pattern
+     is a solid line, corresponding to the empty pattern '\lpatt ()'.
+'\setgray LEVEL'
      Set the gray level of lines.  Gray levels are real values from 0
      (black) through intermediate values (gray) to 1 (white).  The
      initial gray level is 0 corresponding to black.
-
-`\arrowheadtype t:TYPE'
-     Set the arrowhead type to TYPE, where TYPE is one of `F', `T',
-     `W', `V', or `H'.  There are two kinds of arrowheads.  The first
-     kind is a triangle.  There are 3 variants: type `T' is an empty
-     triangle, type `F' is a filled triangle (using the current gray
-     level for lines), type `W' is a triangle filled with white.  The
-     second kind of arrowhead is an open ended Vee.  There are 2
-     variants: type `V' has the stem continue to the tip, type `H' has
-     the stem stop at the base of the arrowhead.  The initial arrowhead
-     type is `T'.
-
-`\arrowheadsize l:LENGTH w:WIDTH'
+'\arrowheadtype t:TYPE'
+     Set the arrowhead type to TYPE, where TYPE is one of 'F', 'T', 'W',
+     'V', or 'H'.  There are two kinds of arrowheads.  The first kind is
+     a triangle.  There are 3 variants: type 'T' is an empty triangle,
+     type 'F' is a filled triangle (using the current gray level for
+     lines), type 'W' is a triangle filled with white.  The second kind
+     of arrowhead is an open ended Vee.  There are 2 variants: type 'V'
+     has the stem continue to the tip, type 'H' has the stem stop at the
+     base of the arrowhead.  The initial arrowhead type is 'T'.
+'\arrowheadsize l:LENGTH w:WIDTH'
      Set the arrowhead size to be LENGTH units long and WIDTH units
      wide.  The width is measured across the "base" of the arrowhead.
      The initial arrowhead size has a LENGTH of 0.16 inches and a WIDTH
      of 0.08 inches.
 
-  Note that the lines which outline the arrowhead will be drawn with the
-same line pattern used for the stem.  Normally, arrow vectors are drawn
-with the line pattern set for a solid line.  Note that the fill level
-used for the `F' variant of the arrowhead uses the same gray level as
-used for lines.  The difference between the `T' variant and the `W'
-variant only shows up if the arrowhead is placed over non-white areas
-of the drawing.  The `W' variant obliterates the area under the
-arrowhead.
+   Note that the lines which outline the arrowhead will be drawn with
+the same line pattern used for the stem.  Normally, arrow vectors are
+drawn with the line pattern set for a solid line.  Note that the fill
+level used for the 'F' variant of the arrowhead uses the same gray level
+as used for lines.  The difference between the 'T' variant and the 'W'
+variant only shows up if the arrowhead is placed over non-white areas of
+the drawing.  The 'W' variant obliterates the area under the arrowhead.
 
-  Examples of line parameter and arrowhead settings are shown in the
+   Examples of line parameter and arrowhead settings are shown in the
 following code.
      \centertexdraw{
        \drawdim in
@@ -515,81 +496,81 @@ following code.
 
 File: texdraw,  Node: TeX text,  Next: Circles and arcs,  Prev: Line vectors,  Up: TeXdraw Commands
 
-TeX text
-========
+2.6 TeX text
+============
 
-  Text may be superimposed on the drawing.  The text argument of the
-`\htext' command is in horizontal mode.  This text can be ordinary
-text, math mode expressions, or even more complicated boxes consisting
-of tables and the like.  The resulting TeX text is placed in a box.
-The reference point of the box can be chosen to be one of nine
-locations: horizontally left, center or right; vertically top, center or
-bottom.  The `\htext' command takes one of two forms.
+Text may be superimposed on the drawing.  The text argument of the
+'\htext' command is in horizontal mode.  This text can be ordinary text,
+math mode expressions, or even more complicated boxes consisting of
+tables and the like.  The resulting TeX text is placed in a box.  The
+reference point of the box can be chosen to be one of nine locations:
+horizontally left, center or right; vertically top, center or bottom.
+The '\htext' command takes one of two forms.
 
-`\htext (X Y){TEXT}'
-`\htext {TEXT}'
+'\htext (X Y){TEXT}'
+'\htext {TEXT}'
      The first form of this command places the TeX text TEXT
-     horizontally with the text reference point at the coordinate `(X
-     Y)'.  The new current position is `(X Y)'.  The second form of
-     this command places the TeX text TEXT horizontally with the text
+     horizontally with the text reference point at the coordinate '(X
+     Y)'.  The new current position is '(X Y)'.  The second form of this
+     command places the TeX text TEXT horizontally with the text
      reference point at the current position.  The text reference point
-     is set with the `\textref' command.
+     is set with the '\textref' command.
 
-  Text can be placed vertically using the `\vtext' command.  The text
+   Text can be placed vertically using the '\vtext' command.  The text
 argument is in horizontal mode.  The TeX text is placed in a box and
 then rotated counterclockwise.  The reference point is the point in the
 box, _before_ rotation of the text.  Not all PostScript printer drivers
 support vertical text.
 
-`\vtext (x y){TEXT}'
-`\vtext {TEXT}'
+'\vtext (x y){TEXT}'
+'\vtext {TEXT}'
      The first form of this command places the TeX text TEXT vertically
-     with the text reference point at the coordinate `(X Y)'.  The new
-     current position is `(X Y)'.  The second form of this command
+     with the text reference point at the coordinate '(X Y)'.  The new
+     current position is '(X Y)'.  The second form of this command
      places the TeX text TEXT vertically with the text reference point
      at the current position.  In both cases, the TeX text is placed in
      a box and the box is rotated counterclockwise by 90 degrees about
-     the text reference point.  The text reference point is set with
-     the `\textref' command.
+     the text reference point.  The text reference point is set with the
+     '\textref' command.
 
-  Text can be placed at an arbitrary angle using the `\rtext' command.
+   Text can be placed at an arbitrary angle using the '\rtext' command.
 The text argument is in horizontal mode.  The TeX text is placed in a
-box and then rotated counterclockwise.  The reference point is the
-point in the box, _before_ rotation of the text.  Not all PostScript
-printer drivers support rotated text.
-
-`\rtext td:ANGLE (x y){TEXT}'
-`\rtext td:ANGLE {TEXT}'
-     The first form of this command places the TeX text TEXT at an
-     angle with the text reference point at the coordinate `(X Y)'.
-     The new current position is `(X Y)'.  The second form of this
-     command places the TeX text TEXT at an angle with the text
-     reference point at the current position.  In both cases, the TeX
-     text is placed in a box and the box is rotated counterclockwise by
-     ANGLE degrees about the text reference point.  The text reference
-     point is set with the `\textref' command.
-
-  The reference point for subsequent TeX text in a `\htext', `\vtext'
-or `\rtext' command is set with the `\textref' command.
-
-`\textref h:H-REF v:V-REF'
+box and then rotated counterclockwise.  The reference point is the point
+in the box, _before_ rotation of the text.  Not all PostScript printer
+drivers support rotated text.
+
+'\rtext td:ANGLE (x y){TEXT}'
+'\rtext td:ANGLE {TEXT}'
+     The first form of this command places the TeX text TEXT at an angle
+     with the text reference point at the coordinate '(X Y)'.  The new
+     current position is '(X Y)'.  The second form of this command
+     places the TeX text TEXT at an angle with the text reference point
+     at the current position.  In both cases, the TeX text is placed in
+     a box and the box is rotated counterclockwise by ANGLE degrees
+     about the text reference point.  The text reference point is set
+     with the '\textref' command.
+
+   The reference point for subsequent TeX text in a '\htext', '\vtext'
+or '\rtext' command is set with the '\textref' command.
+
+'\textref h:H-REF v:V-REF'
      Set the text reference point for subsequent text commands.  The
-     horizontal reference point H-REF is one of `L', `C' or `R' (left,
+     horizontal reference point H-REF is one of 'L', 'C' or 'R' (left,
      center or right).  The vertical reference point V-REF is one of
-     `T', `C' or `B' (top, center or bottom).  For rotated text, the
+     'T', 'C' or 'B' (top, center or bottom).  For rotated text, the
      reference point is determined before rotation.  The initial text
-     reference point corresponds to `\textref h:L v:B'.
+     reference point corresponds to '\textref h:L v:B'.
 
-The font used to render the text is determined as for any other TeX
+   The font used to render the text is determined as for any other TeX
 text.  Normally the font used outside of TeXdraw is in effect.  If
 desired, other fonts can be specified as part of the text.  Any font
 changes within a TeXdraw text command remain local to that command.
 
-  Only the coordinate of the text reference point in a `\htext',
-`\vtext' or `\rtext' command is used in calculating the size of the
+   Only the coordinate of the text reference point in a '\htext',
+'\vtext' or '\rtext' command is used in calculating the size of the
 drawing.  This means that text itself can spill outside of the drawing
-area determined by TeXdraw.  The area of the drawing can be increased
-to include the text by issuing additional `\move' commands.
+area determined by TeXdraw.  The area of the drawing can be increased to
+include the text by issuing additional '\move' commands.
 
      \centertexdraw{
                   \avec(-0.75 -0.25) \textref h:R v:C \htext{H-text}
@@ -602,73 +583,69 @@ to include the text by issuing additional `\move' commands.
 
 File: texdraw,  Node: Circles and arcs,  Next: Bezier curves,  Prev: TeX text,  Up: TeXdraw Commands
 
-Circles, ellipses and arcs
-==========================
+2.7 Circles, ellipses and arcs
+==============================
+
+TeXdraw supplies commands to generate circles, ellipses and arcs.  There
+are two forms of the circle command.  The '\lcir' command draws a circle
+of given radius.  The '\fcir' command draws a filled circle.  In the
+latter case, the circle is filled by a specified gray level.  For the
+filled circle, the line defining the circumference of the circle is not
+drawn.  Note that the gray level area filled in by the '\fcir' command
+is opaque, even if the fill is chosen to be white.  For either form of
+the circle command, the drawing size is increased if necessary to
+contain the circle.
 
-  TeXdraw supplies commands to generate circles, ellipses and arcs.
-There are two forms of the circle command.  The `\lcir' command draws a
-circle of given radius.  The `\fcir' command draws a filled circle.  In
-the latter case, the circle is filled by a specified gray level.  For
-the filled circle, the line defining the circumference of the circle is
-not drawn.  Note that the gray level area filled in by the `\fcir'
-command is opaque, even if the fill is chosen to be white.  For either
-form of the circle command, the drawing size is increased if necessary
-to contain the circle.
-
-  The `\lellip' command generates an ellipse specified by the radius of
+   The '\lellip' command generates an ellipse specified by the radius of
 the ellipse in the X direction and the radius of the ellipse in the Y
 direction.  The ellipse is symmetrical about horizontal and vertical
-lines drawn through the current point.  The `\fellip' command draws a
+lines drawn through the current point.  The '\fellip' command draws a
 filled ellipse.  In the latter case, the ellipse is filled by a
 specified gray level.  For the filled ellipse, the line defining the
 boundary of the ellipse is not drawn.  For either form of the ellipse
 command, the drawing size is increased if necessary to contain the
 ellipse.
 
-  The `\larc' command generates a counterclockwise arc specified by a
+   The '\larc' command generates a counterclockwise arc specified by a
 start angle in degrees and an end angle in degrees.  The center of the
 arc is the current position.  Only the arc is drawn, not the line
-joining the center to the beginning of the arc.  Note that the `\larc'
+joining the center to the beginning of the arc.  Note that the '\larc'
 command does not affect the size of the drawing.
 
-`\lcir r:RADIUS'
+'\lcir r:RADIUS'
      Draw a circle with center at the current position.  The radius is
      specified by RADIUS.  This command draws a line along the
      circumference of the circle.  The drawing size is increased if
      necessary to contain the circle.
-
-`\fcir f:LEVEL r:RADIUS'
+'\fcir f:LEVEL r:RADIUS'
      Draw a filled circle with center at the current position.  The
-     radius is specified by RADIUS.  The circle is painted with the
-     gray level specified by LEVEL.  A gray level of 1 corresponds to
-     white, with decreasing values getting darker.  The level 0 is full
-     black.  This command does not draw a line along the circumference.
-     The drawing size is increased if necessary to contain the circle.
-
-`\lellip rx:X-RADIUS ry:Y-RADIUS'
-     Draw an ellipse with center at the current position.  The radius
-     in the X direction is specified by X-RADIUS.  The radius in the Y
+     radius is specified by RADIUS.  The circle is painted with the gray
+     level specified by LEVEL.  A gray level of 1 corresponds to white,
+     with decreasing values getting darker.  The level 0 is full black.
+     This command does not draw a line along the circumference.  The
+     drawing size is increased if necessary to contain the circle.
+'\lellip rx:X-RADIUS ry:Y-RADIUS'
+     Draw an ellipse with center at the current position.  The radius in
+     the X direction is specified by X-RADIUS.  The radius in the Y
      direction is specified by Y-RADIUS.  The drawing size is increased
      if necessary to contain the ellipse.
-
-`\fellip f:LEVEL rx:X-RADIUS ry:Y-RADIUS'
+'\fellip f:LEVEL rx:X-RADIUS ry:Y-RADIUS'
      Draw a filled ellipse with center at the current position.  The
      radius in the X direction is specified by X-RADIUS.  The radius in
      the Y direction is specified by Y-RADIUS.  The ellipse is painted
      with the gray level specified by LEVEL.  A gray level of 1
      corresponds to white, with decreasing values getting darker.  The
-     level 0 is full black.  This command does not draw a line along
-     the boundary of the ellipse.  The drawing size is increased if
+     level 0 is full black.  This command does not draw a line along the
+     boundary of the ellipse.  The drawing size is increased if
      necessary to contain the ellipse.
-
-`\larc r:RADIUS sd:START-ANGLE ed:END-ANGLE'
+'\larc r:RADIUS sd:START-ANGLE ed:END-ANGLE'
      Draw a counterclockwise arc.  The center of the arc is at the
      current position.  The radius is specified by RADIUS.  The start
      and end angles (in degrees) are specified by START-ANGLE and
      END-ANGLE.  This command does not affect the limits (size) of the
      drawing.
 
-  As an example, the following commands draw a filled circle, and
+   As an example, the following commands draw a filled circle, and
 superimpose an arc.
      \centertexdraw{
        \linewd 0.02
@@ -677,7 +654,7 @@ superimpose an arc.
        \lvec (+0.707 +0.707) \move (0 0) \lvec (-0.707 +0.707)
      }
 
-  Note that for the arc command, the resulting figure can spill outside
+   Note that for the arc command, the resulting figure can spill outside
 of the TeXdraw box as determined by the maximum excursions of the
 coordinates.  Extra moves can be used to compensate for the size of the
 arc.
@@ -685,43 +662,40 @@ arc.
 
 File: texdraw,  Node: Bezier curves,  Next: Fill commands,  Prev: Circles and arcs,  Up: TeXdraw Commands
 
-Bezier curves
-=============
+2.8 Bezier curves
+=================
 
-  Bezier curves in TeXdraw use 4 reference coordinates, two as the end
+Bezier curves in TeXdraw use 4 reference coordinates, two as the end
 points and two others to control the shape of the curve.  Let the 4
-points be `(X0 Y0)', `(X1 Y1)', `(X2 Y2)' and `(X3 Y3)'.  The curve
+points be '(X0 Y0)', '(X1 Y1)', '(X2 Y2)' and '(X3 Y3)'.  The curve
 starts out tangent to the line joining the first two points and ends up
 tangent to the line joining the second two points.  The control points
 "pull" at the curve to control the curvature.  The amount of pull
 increases with the distance of the control point from the endpoint.
 
-  As the parameter u varies from 0 to 1, the coordinates of the Bezier
+   As the parameter u varies from 0 to 1, the coordinates of the Bezier
 curve are given by a pair of parametric cubic equations,
 
-x(u) = (1-u)^3 x0  + 3u (1-u)^2 x1  + 3u^2 (1-u) x2  + u^3 x3
+x(u) = (1-u)^3 x0 + 3u (1-u)^2 x1 + 3u^2 (1-u) x2 + u^3 x3 y(u) =
+(1-u)^3 y0 + 3u (1-u)^2 y1 + 3u^2 (1-u) y2 + u^3 y3 .
 
-y(u) = (1-u)^3 y0  + 3u (1-u)^2 y1  + 3u^2 (1-u) y2  + u^3 y3 .
-
-`\clvec (X1 Y1)(X2 Y2)(X3 Y3)'
+'\clvec (X1 Y1)(X2 Y2)(X3 Y3)'
      Draw a Bezier curve from the current position to the coordinate
-     `(X3 Y3)' which becomes the new current position.  The coordinates
-     `(X1 Y1)' and `(X2 Y2)' serve as control points for the curve.
+     '(X3 Y3)' which becomes the new current position.  The coordinates
+     '(X1 Y1)' and '(X2 Y2)' serve as control points for the curve.
      Only the last coordinate given is used to update the size of the
      drawing.
-
 Note that only 3 coordinate pairs are specified.  The other point is the
-current position before the `\clvec' command is executed.  Only the
-last coordinate specified in the `\clvec' command is used to determine
-the extent of the drawing.  While the Bezier curve passes through the
-old current position and the new current position, in general the curve
-will not reach the intermediate control points.  The curve is always
-entirely enclosed by the convex quadrilateral defined by the two end
-points and the two control points.  Note that the curve may pass
-outside the limits of the drawing as determined by the end point of the
-curve.
-
-  A simple Bezier curve is produced by the following example.
+current position before the '\clvec' command is executed.  Only the last
+coordinate specified in the '\clvec' command is used to determine the
+extent of the drawing.  While the Bezier curve passes through the old
+current position and the new current position, in general the curve will
+not reach the intermediate control points.  The curve is always entirely
+enclosed by the convex quadrilateral defined by the two end points and
+the two control points.  Note that the curve may pass outside the limits
+of the drawing as determined by the end point of the curve.
+
+   A simple Bezier curve is produced by the following example.
      \btexdraw
        \move (0 0)
        \clvec (0 1)(1 0)(1 1)
@@ -730,39 +704,38 @@ curve.
 
 File: texdraw,  Node: Fill commands,  Prev: Bezier curves,  Up: TeXdraw Commands
 
-Fill commands
-=============
-
-  PostScript deals with paths consisting of line segments.  The paths
-can be closed and the interior of the closed region filled.  From
-TeXdraw, paths start with a `\move' or `\rmove' command and continue
-with `\lvec', `\rlvec' or `\clvec' commands.  The TeXdraw fill commands
-close the path and fill the interior of the closed region.  Closing the
-path means that effectively another `\lvec' line is drawn from the last
-point specified to the initial point.  TeXdraw provides two forms of
-the fill command.  The `\ifill' fills the interior of the region with
-the given gray level.  The lines defining the path are not drawn.  The
-`\lfill' command fills the region defined by the closed path and draws
-a line along the enclosing path.  Note for both forms of the fill
-command, the gray level used for filling is opaque, even if the gray
-level is chosen to be white.
-
-`\lfill f:LEVEL'
+2.9 Fill commands
+=================
+
+PostScript deals with paths consisting of line segments.  The paths can
+be closed and the interior of the closed region filled.  From TeXdraw,
+paths start with a '\move' or '\rmove' command and continue with
+'\lvec', '\rlvec' or '\clvec' commands.  The TeXdraw fill commands close
+the path and fill the interior of the closed region.  Closing the path
+means that effectively another '\lvec' line is drawn from the last point
+specified to the initial point.  TeXdraw provides two forms of the fill
+command.  The '\ifill' fills the interior of the region with the given
+gray level.  The lines defining the path are not drawn.  The '\lfill'
+command fills the region defined by the closed path and draws a line
+along the enclosing path.  Note for both forms of the fill command, the
+gray level used for filling is opaque, even if the gray level is chosen
+to be white.
+
+'\lfill f:LEVEL'
      Close the current path, draw the line around the path using the
      current grey level for lines and paint the interior of the region
      with specified gray level LEVEL.  Gray levels are real values from
      0 (black) through intermediate values (grays) to 1 (white).
-
-`\ifill f:LEVEL'
+'\ifill f:LEVEL'
      Close the current path and paint the interior of the region with
      gray level LEVEL.  The line around the path is not drawn.  Gray
      levels are real values from 0 (black) through intermediate values
      (grays) to 1 (white).
 
-  The following example draws a "flag" with the interior filled in.  The
-path around the boundary is given in a clockwise order to define a
+   The following example draws a "flag" with the interior filled in.
+The path around the boundary is given in a clockwise order to define a
 closed path.  We could take advantage of the fact that the fill command
-will close an open path to eliminate one of the `\lvec' commands.
+will close an open path to eliminate one of the '\lvec' commands.
      \centertexdraw{
      \move (0.5 0)
      \lvec (0 0.5) \clvec (0.5 0.85)(1 0.65)(1.5 1)
@@ -770,22 +743,22 @@ will close an open path to eliminate one of the `\lvec' commands.
      \lfill f:0.8
      }
 
-  In TeXdraw, the `\move' command always terminates any previous paths
+   In TeXdraw, the '\move' command always terminates any previous paths
 and starts a new path.  Commands that change line parameters (e.g.
-`\setgray' or `\lpatt') also terminate paths and start new paths.  The
+'\setgray' or '\lpatt') also terminate paths and start new paths.  The
 circle, ellipse and arc commands do not affect the definition of the
-current path.  The `\avec' command is not appropriate for defining a
+current path.  The '\avec' command is not appropriate for defining a
 path to be filled.  It ends a subpath at its tail and begins a new
-subpath at its tip.  Filling a region defined by a path with subpaths
-is more complicated in that each subpath is closed before filling.
+subpath at its tip.  Filling a region defined by a path with subpaths is
+more complicated in that each subpath is closed before filling.
 
 
 File: texdraw,  Node: Drawing Segments and Scaling,  Next: Using TeXdraw with LaTeX,  Prev: TeXdraw Commands,  Up: Top
 
-Drawing Segments and Scaling
-****************************
+3 Drawing Segments and Scaling
+******************************
 
-  TeXdraw provides individually scaled segments which can be used to
+TeXdraw provides individually scaled segments which can be used to
 create relocatable drawing modules.
 
 * Menu:
@@ -800,39 +773,38 @@ create relocatable drawing modules.
 
 File: texdraw,  Node: Drawing segments,  Next: Drawing paths,  Up: Drawing Segments and Scaling
 
-Drawing segments
-================
+3.1 Drawing segments
+====================
 
-  A TeXdraw drawing segment allows for local modifications of
-parameters and relative positioning.  A TeXdraw segment is delimited by
-a `\bsegment' command and an `\esegment' command.  Inside the segment,
-the initial current position is `(0 0)'.  Any changes to parameters
-such as the gray level and the line width, remain local to the segment.
-Segments are implemented in TeX using a `\begingroup' and `\endgroup'.
+A TeXdraw drawing segment allows for local modifications of parameters
+and relative positioning.  A TeXdraw segment is delimited by a
+'\bsegment' command and an '\esegment' command.  Inside the segment, the
+initial current position is '(0 0)'.  Any changes to parameters such as
+the gray level and the line width, remain local to the segment.
+Segments are implemented in TeX using a '\begingroup' and '\endgroup'.
 Segments can be nested.
 
-`\bsegment'
+'\bsegment'
      Start a drawing segment.  The coordinate system is shifted such
-     that the current position corresponds to the coordinate `(0 0)'.
+     that the current position corresponds to the coordinate '(0 0)'.
      Changes to scaling, position and line parameters stay local to the
      drawing segment.
-
-`\esegment'
+'\esegment'
      End a drawing segment.  The current position in effect before the
-     corresponding `\bsegment' command is restored.  The scaling and
+     corresponding '\bsegment' command is restored.  The scaling and
      line parameter values revert to those in effect before the
-     corresponding `\bsegment' command was invoked.
+     corresponding '\bsegment' command was invoked.
 
 
 File: texdraw,  Node: Drawing paths,  Next: Saving positions,  Prev: Drawing segments,  Up: Drawing Segments and Scaling
 
-Drawing paths
-=============
+3.2 Drawing paths
+=================
 
-  Certain subtle interactions occur between drawing segments and fill
+Certain subtle interactions occur between drawing segments and fill
 operations.  In PostScript, lines are drawn by first defining a path,
 then later stroking the path to draw the line.  In TeXdraw, this
-stroking occurs when the line is terminated, say by a `\move' command.
+stroking occurs when the line is terminated, say by a '\move' command.
 PostScript paths are interrupted by, but continue after a drawing
 segment.  This means that a path started before a segment may not be
 stroked (drawn) until after the segment ends.  Consider the following
@@ -844,64 +816,63 @@ example.
        \fcir f:0.8 r:0.5
      \esegment
      \move (0 0)
-A PostScript path is started at `(0 0)' and continues with a line
-to `(1 1)'.  This path is interrupted by the segment.  The filled
-circle is drawn next.  After the segment, the path continues and is not
-stroked until the `\move (0 0)' command after the end of the segment.
-This means that the line appears on top of the filled region.
-
-  If the fill operation is to cover the line, the path must be stroked
-before the fill operation.  From TeXdraw, the move commands `\move' and
-`\rmove', and the end TeXdraw command `\etexdraw' terminate a path and
+   A PostScript path is started at '(0 0)' and continues with a line to
+'(1 1)'.  This path is interrupted by the segment.  The filled circle is
+drawn next.  After the segment, the path continues and is not stroked
+until the '\move (0 0)' command after the end of the segment.  This
+means that the line appears on top of the filled region.
+
+   If the fill operation is to cover the line, the path must be stroked
+before the fill operation.  From TeXdraw, the move commands '\move' and
+'\rmove', and the end TeXdraw command '\etexdraw' terminate a path and
 cause it to be stroked.  Within a segment, the end segment command
-`\esegment' also terminates and strokes a path.  In the example above,
-the line can be stroked by inserting a move command (such as a `\rmove
+'\esegment' also terminates and strokes a path.  In the example above,
+the line can be stroked by inserting a move command (such as a '\rmove
 (0 0)' which does not affect the position), before the start of the
 segment.
 
 
 File: texdraw,  Node: Saving positions,  Next: Scaling coordinates,  Prev: Drawing paths,  Up: Drawing Segments and Scaling
 
-Saving positions
-================
+3.3 Saving positions
+====================
 
-  The `\savecurrpos' command saves the current position.  The saved
+The '\savecurrpos' command saves the current position.  The saved
 position is an absolute position, not one relative to a segment.  The
 position saving mechanism is global; the position can be saved within a
 nested segment and then used outside of the segment.  The X and Y
 coordinates of the position are saved separately as named coordinates.
-The names are of the form `*NAME', with the leading `*' being
-obligatory.  A companion command, `\savepos', saves a given coordinate
+The names are of the form '*NAME', with the leading '*' being
+obligatory.  A companion command, '\savepos', saves a given coordinate
 (relative to the current segment) as an absolute symbolic position.
 
-`\savecurrpos (*PX *PY)'
+'\savecurrpos (*PX *PY)'
      Save the current position as the absolute position referenced by
-     `(*PX *PY)'.
-
-`\savepos (X Y)(*PX *PY)'
-     Save the coordinate position `(X Y)' as the absolute position
-     referenced by `(*PX *PY)'.  The coordinate `(X Y)' is interpreted
+     '(*PX *PY)'.
+'\savepos (X Y)(*PX *PY)'
+     Save the coordinate position '(X Y)' as the absolute position
+     referenced by '(*PX *PY)'.  The coordinate '(X Y)' is interpreted
      in the normal fashion as a coordinate relative to the current
      segment, using the current scaling factors and drawing unit.
 
-  The symbolic names used to specify a saved position can consist of any
-characters that are not special to TeX, but must start with a `*'
+   The symbolic names used to specify a saved position can consist of
+any characters that are not special to TeX, but must start with a '*'
 character.  The symbolic names can be used as the X and/or Y coordinate
 in any command that needs a coordinate.  Symbolic coordinates are not
-normally used with relative motion commands such as `\rlvec' or
-`\rmove'.  If used with relative motion, the corresponding displacement
+normally used with relative motion commands such as '\rlvec' or
+'\rmove'.  If used with relative motion, the corresponding displacement
 is equal to the symbolic coordinate value.
 
-  On exit from a segment, the position and graphics state on entry is
+   On exit from a segment, the position and graphics state on entry is
 restored.  Any changes to line types, scaling and position are
 discarded.  However, it is sometimes useful alter the position on exit
-from a segment.  The `\savepos' command allows for the saving of a
+from a segment.  The '\savepos' command allows for the saving of a
 position within the segment.  This position can be restored after the
-`\esegment' with a `\move' command using the saved symbolic position.
+'\esegment' with a '\move' command using the saved symbolic position.
 This approach can be used to build modules which operate in a manner
 analogous to the basic relative motion line vector commands.
 
-  The following example defines a macro which draws a box 0.75 inches
+   The following example defines a macro which draws a box 0.75 inches
 wide by 0.5 inches high containing centered text.  On leaving the macro
 the position will be set at a point on the righthand side of the box.
      \def\tbox #1{\bsegment
@@ -911,7 +882,7 @@ the position will be set at a point on the righthand side of the box.
                     \savepos (0.75 0)(*ex *ey)
                   \esegment
                   \move (*ex *ey)}
-With this definition, we can treat `\tbox' in the same way as the
+   With this definition, we can treat '\tbox' in the same way as the
 basic vector commands, stringing them together to form a block diagram
 as in this example.
      \centertexdraw{
@@ -921,63 +892,60 @@ as in this example.
 
 File: texdraw,  Node: Scaling coordinates,  Next: Drawing size,  Prev: Saving positions,  Up: Drawing Segments and Scaling
 
-Scaling coordinates
-===================
+3.4 Scaling coordinates
+=======================
 
-  There are two scale factors available, the unit scale factor and the
+There are two scale factors available, the unit scale factor and the
 segment scale factor.  The overall scale factor is the product of these
 two.  There are absolute and relative versions of commands to change
 these scale factors.
 
-  The unit scale factor is normally used to affect global scale changes.
-Changes to the unit scale factor remains local to a segment, but
-propagate to inferior segments.  The default value is unity.
+   The unit scale factor is normally used to affect global scale
+changes.  Changes to the unit scale factor remains local to a segment,
+but propagate to inferior segments.  The default value is unity.
 
-  The segment scale factor is used for local scale changes.  It remains
+   The segment scale factor is used for local scale changes.  It remains
 local to a segment.  The segment scale factor is reset to unity on entry
 into each segment.  This means that changes to the segment scale factor
 do not propagate to inferior segments.
 
-`\setunitscale SCALE'
-     Set the unit scaling to SCALE.  The argument SCALE is a real
-     number which is used to scale coordinate values.  The overall
-     scaling factor is the product of the unit scale factor and the
-     segment scale factor.
-
-`\relunitscale VALUE'
-     Adjust the unit scale factor by multiplying by VALUE.  This has
-     the effect of multiplying the overall scale factor by the same
-     factor.  The overall scaling factor is the product of the unit
-     scale factor and the segment scale factor.
-
-`\setsegscale SCALE'
-     Set the segment scale factor.  The argument SCALE is a real number
-     which is used to scale coordinate values.  The overall scale
+'\setunitscale SCALE'
+     Set the unit scaling to SCALE.  The argument SCALE is a real number
+     which is used to scale coordinate values.  The overall scaling
      factor is the product of the unit scale factor and the segment
      scale factor.
-
-`\relsegscale VALUE'
+'\relunitscale VALUE'
+     Adjust the unit scale factor by multiplying by VALUE.  This has the
+     effect of multiplying the overall scale factor by the same factor.
+     The overall scaling factor is the product of the unit scale factor
+     and the segment scale factor.
+'\setsegscale SCALE'
+     Set the segment scale factor.  The argument SCALE is a real number
+     which is used to scale coordinate values.  The overall scale factor
+     is the product of the unit scale factor and the segment scale
+     factor.
+'\relsegscale VALUE'
      Adjust the segment scale factor by multiplying by VALUE.  This has
      the effect of multiplying the current overall scale factor by the
-     same factor.  The overall scaling factor is the product of the
-     unit scale factor and the segment scale factor.
+     same factor.  The overall scaling factor is the product of the unit
+     scale factor and the segment scale factor.
 
-  In addition to the unit scale factor and the segment scale factor, the
-scaling can be controlled by the choice of drawing units with the
-command `\drawdim' (*note Coordinate specification::).
+   In addition to the unit scale factor and the segment scale factor,
+the scaling can be controlled by the choice of drawing units with the
+command '\drawdim' (*note Coordinate specification::).
 
-`\drawdim cm \setunitscale 2.54'
+'\drawdim cm \setunitscale 2.54'
      Set the units to centimetres scaled by 2.54.  Together these
-     commands are effectively the same as `\drawdim in'.
+     commands are effectively the same as '\drawdim in'.
 
-  The segment scale can be used to allow scale changes in segments so
+   The segment scale can be used to allow scale changes in segments so
 that values are in more convenient units.  For example suppose
 dimensions in a segment are multiples of one third of an inch.  The
 segment scale can be set once to make 1 drawing unit equal 0.3333
 inches.  From that point on, coordinates can be specified with integer
 values.
 
-  The following example defines a macro to draw a rectangular box which
+   The following example defines a macro to draw a rectangular box which
 is twice as wide as it is high.  The width is specified as an argument.
      \def\mybox #1{\bsegment
                      \setsegscale #1
@@ -988,70 +956,69 @@ is twice as wide as it is high.  The width is specified as an argument.
 
 File: texdraw,  Node: Drawing size,  Next: Initial current position,  Prev: Scaling coordinates,  Up: Drawing Segments and Scaling
 
-Drawing size
-============
+3.5 Drawing size
+================
 
-  The effective size of the drawing is determined by the maximum
-excursions of the coordinates supplied to TeXdraw commands.  The
-minimum and maximum scaled X and Y coordinates are tallied.  Note that
-`\move' commands contribute to the determination of the calculated size
-of the drawing, even though they do not generate visible lines.  The
-circle and ellipse commands add a compensation for the radii of circles
-and ellipses.  The final TeXdraw drawing is placed in a TeX box with
-lower lefthand corner corresponding to `('X-min Y-min`)' and upper
-righthand corner at `('X-max Y-max`)'.
-
-  Text generated by `\htext', `\vtext' or `\rtext' can spill outside
+The effective size of the drawing is determined by the maximum
+excursions of the coordinates supplied to TeXdraw commands.  The minimum
+and maximum scaled X and Y coordinates are tallied.  Note that '\move'
+commands contribute to the determination of the calculated size of the
+drawing, even though they do not generate visible lines.  The circle and
+ellipse commands add a compensation for the radii of circles and
+ellipses.  The final TeXdraw drawing is placed in a TeX box with lower
+lefthand corner corresponding to '('X-min Y-min')' and upper righthand
+corner at '('X-max Y-max')'.
+
+   Text generated by '\htext', '\vtext' or '\rtext' can spill outside
 the box as determined above.  Only the text reference point is
 guaranteed to be in the drawing box.  Arcs can also spill outside the
 drawing box.  Note also that the widths of lines, and the sizes of
 arrowheads do not affect the size of the drawing.  The calculated size
-of the drawing will never be larger than the actual size of the
-drawing.  In extreme cases in which text or lines extend far outside
-the drawing, extra `\move' commands should be used to establish the
-size of the drawing so that the TeXdraw box includes all of the drawing.
+of the drawing will never be larger than the actual size of the drawing.
+In extreme cases in which text or lines extend far outside the drawing,
+extra '\move' commands should be used to establish the size of the
+drawing so that the TeXdraw box includes all of the drawing.
 
-  TeXdraw provides the `\drawbb' command to draw a box which indicates
-the effective size of the drawing.  Whenever `\drawbb' is invoked, a
+   TeXdraw provides the '\drawbb' command to draw a box which indicates
+the effective size of the drawing.  Whenever '\drawbb' is invoked, a
 ruled box is drawn around the drawing as it has been sized up to that
-point.  Normally `\drawbb' is invoked just before the end of a drawing
+point.  Normally '\drawbb' is invoked just before the end of a drawing
 to indicate the effective size of the final drawing.
 
-`\drawbb'
+'\drawbb'
      Draw a ruled box around the effective size of a drawing produced by
      TeXdraw commands.
 
 
 File: texdraw,  Node: Initial current position,  Prev: Drawing size,  Up: Drawing Segments and Scaling
 
-Initial current position
-========================
+3.6 Initial current position
+============================
 
-  The first operation in a drawing should be a move to establish the
+The first operation in a drawing should be a move to establish the
 current position.  The current position can be established explicitly
-through a `\move' command or a text positioning command such as
-`\htext' with a coordinate.  However, if an attempt is made to use a
-drawing command which needs a current position and none has been
-established, TeXdraw implicitly sets the initial current position to
-`(0 0)'.  The size of the TeXdraw figure is normally determined from
-the sequence of coordinates specified, but will include the implicit
-initial position in case another initial position has not been
-explicitly specified.
+through a '\move' command or a text positioning command such as '\htext'
+with a coordinate.  However, if an attempt is made to use a drawing
+command which needs a current position and none has been established,
+TeXdraw implicitly sets the initial current position to '(0 0)'.  The
+size of the TeXdraw figure is normally determined from the sequence of
+coordinates specified, but will include the implicit initial position in
+case another initial position has not been explicitly specified.
 
 
 File: texdraw,  Node: Using TeXdraw with LaTeX,  Next: More Details,  Prev: Drawing Segments and Scaling,  Up: Top
 
-Using TeXdraw with LaTeX
-************************
+4 Using TeXdraw with LaTeX
+**************************
 
-  The LaTeX typesetting system uses a structured approach to declaring
-typesetting environments.  For LaTeX2e, the `texdraw' package defines
-the `texdraw' environment.  The TeXdraw environment is started with a
-`\begin{texdraw}' command and terminated with an `\end{texdraw}'
+The LaTeX typesetting system uses a structured approach to declaring
+typesetting environments.  For LaTeX2e, the 'texdraw' package defines
+the 'texdraw' environment.  The TeXdraw environment is started with a
+'\begin{texdraw}' command and terminated with an '\end{texdraw}'
 command.  All of the basic TeXdraw commands can be used within the
-`texdraw' environment.
+'texdraw' environment.
 
-  As an example, a LaTeX2e variant of an earlier example can be
+   As an example, a LaTeX2e variant of an earlier example can be
 constructed as follows.
      \documentclass{article}
      \usepackage{texdraw}
@@ -1074,10 +1041,10 @@ constructed as follows.
       ...
      \end{document}
 
-  This example illustrates the use of the LaTeX command `\newcommand'
-as an alternative to the plain TeX command `\def'.  Instead of the
-basic TeXdraw command `\centertexdraw', a nested combination of the
-LaTeX centering environment and the TeXdraw environment is used.
+   This example illustrates the use of the LaTeX command '\newcommand'
+as an alternative to the plain TeX command '\def'.  Instead of the basic
+TeXdraw command '\centertexdraw', a nested combination of the LaTeX
+centering environment and the TeXdraw environment is used.
 
 * Menu:
 
@@ -1086,34 +1053,34 @@ LaTeX centering environment and the TeXdraw environment is used.
 
 File: texdraw,  Node: PostScript printer drivers,  Up: Using TeXdraw with LaTeX
 
-PostScript printer drivers
-==========================
-
-  The `texdraw' package uses the printer driver interface provided by
-the standard LaTeX2e `graphics' package.  Any options to the `texdraw'
-package are passed to the `graphics' package.  Specifically, the name
-of the PostScript driver to be used can be specified as an option to
-the `texdraw' package.  With no explicit printer driver option, the
-default printer driver associated with the `graphics' package is used.
-
-  The `texdraw' package can be used with any of the printer drivers
-supported by the `graphics' package that allow for the importation of
-PostScript graphics files, viz., `dvips', `xdvi', `dvi2ps', `dvialw',
-`dvilaser', `dvipsone', `dviwindo', `dvitops', `oztex', `psprint',
-`textures', `pctexps', and `pctexwin'.  Not all of these drivers
-support the text rotation needed for the TeXdraw commands `\vtext' and
-`\rtext'.  Of the drivers listed above, only the following support
-support text rotation: `dvips', `xdvi', `dvi2ps', `dvitops',
-`textures', and `pctexps'.
+4.1 PostScript printer drivers
+==============================
+
+The 'texdraw' package uses the printer driver interface provided by the
+standard LaTeX2e 'graphics' package.  Any options to the 'texdraw'
+package are passed to the 'graphics' package.  Specifically, the name of
+the PostScript driver to be used can be specified as an option to the
+'texdraw' package.  With no explicit printer driver option, the default
+printer driver associated with the 'graphics' package is used.
+
+   The 'texdraw' package can be used with any of the printer drivers
+supported by the 'graphics' package that allow for the importation of
+PostScript graphics files, viz., 'dvips', 'xdvi', 'dvi2ps', 'dvialw',
+'dvilaser', 'dvipsone', 'dviwindo', 'dvitops', 'oztex', 'psprint',
+'textures', 'pctexps', and 'pctexwin'.  Not all of these drivers support
+the text rotation needed for the TeXdraw commands '\vtext' and '\rtext'.
+Of the drivers listed above, only the following support support text
+rotation: 'dvips', 'xdvi', 'dvi2ps', 'dvitops', 'textures', and
+'pctexps'.
 
 
 File: texdraw,  Node: More Details,  Next: PostScript Commands,  Prev: Using TeXdraw with LaTeX,  Up: Top
 
-More Details
-************
+5 More Details
+**************
 
-  The first part of this chapter offers some suggestions for strategies
-to isolate errors in TeX and TeXdraw input.  The second part of this
+The first part of this chapter offers some suggestions for strategies to
+isolate errors in TeX and TeXdraw input.  The second part of this
 chapter discusses implementational issues.  An awareness of these issues
 is useful if TeXdraw is to be extended.
 
@@ -1126,56 +1093,56 @@ is useful if TeXdraw is to be extended.
 
 File: texdraw,  Node: Errors while using TeXdraw,  Next: Extending TeXdraw,  Up: More Details
 
-Errors while using TeXdraw
-==========================
+5.1 Errors while using TeXdraw
+==============================
 
-  TeX input is notoriously difficult to debug.  If TeX reports errors,
-so much the better.  If the cause is not immediately obvious, consider
+TeX input is notoriously difficult to debug.  If TeX reports errors, so
+much the better.  If the cause is not immediately obvious, consider
 using a binary search strategy, removing sections of code with the
-premature insertion of the `\bye' (or `\end{document}' for LaTeX)
+premature insertion of the '\bye' (or '\end{document}' for LaTeX)
 command (with the appropriate closing of any open groups and the like).
-Other strategies include the insertion of `\message{I am here}' at
-appropriate places.  Try using `\tracingmacros=1'.  Many problems turn
+Other strategies include the insertion of '\message{I am here}' at
+appropriate places.  Try using '\tracingmacros=1'.  Many problems turn
 out to be due to an incorrect number of macro arguments or incorrectly
-delimited macro arguments.  The `\tracingmacros=1' option writes the
+delimited macro arguments.  The '\tracingmacros=1' option writes the
 macro arguments and macro expansions to the TeX log file.
 
-  Certain errors may not manifest themselves until well after the
+   Certain errors may not manifest themselves until well after the
 offending command.  For instance, if a closing parenthesis is missing
 from a TeXdraw coordinate, TeX continues searching for the parenthesis.
 If one is found, perhaps many lines later, the TeXdraw error message
-`invalid coordinate' will be printed at this later point.
+'invalid coordinate' will be printed at this later point.
 
-  All input in the TeXdraw environment should be intended for
+   All input in the TeXdraw environment should be intended for
 interpretation by TeXdraw commands.  TeXdraw places text inside a zero
 size box (the text itself extends outside the box).  Extraneous input
-manifests itself as a non-zero size TeXdraw text box. This causes the
+manifests itself as a non-zero size TeXdraw text box.  This causes the
 TeXdraw text and the PostScript graphics to be displaced from one
 another.  An error message is issued if a non-zero width TeXdraw text
 box is detected.  If this error message appears, look for unintended
 character sequences amongst the commands to TeXdraw.
 
-  Several TeXdraw commands pass their arguments "raw" to the PostScript
+   Several TeXdraw commands pass their arguments "raw" to the PostScript
 file.  That means that invalid arguments can generate PostScript errors
 when the document is printed.  For instance the argument of the
-`\setgray' command is passed straight through to the PostScript file.
+'\setgray' command is passed straight through to the PostScript file.
 If this argument is non-numeric, a PostScript error results.  Not all
 PostScript printers report errors back to the user.  The print may just
 stop prematurely.  One approach to debugging is to use a PostScript
-previewer on a workstation. That way, one can determine at which point
+previewer on a workstation.  That way, one can determine at which point
 in the drawing the PostScript error occurs.
 
 
 File: texdraw,  Node: Extending TeXdraw,  Next: How TeXdraw merges graphics and text,  Prev: Errors while using TeXdraw,  Up: More Details
 
-Extending TeXdraw
-=================
+5.2 Extending TeXdraw
+=====================
 
-  TeXdraw is implemented using a combination of TeX commands and
+TeXdraw is implemented using a combination of TeX commands and
 PostScript code.  This section discusses some of the implementational
 issues as they relate to extending TeXdraw.
 
-  TeXdraw as implemented, offers a basic set of drawing features.
+   TeXdraw as implemented, offers a basic set of drawing features.
 These are adequate for certain tasks such as producing block diagrams.
 There are different approaches to extending TeXdraw to include other
 functions.  In some cases, the desired functionality can be achieved by
@@ -1186,11 +1153,11 @@ access to different features of PostScript is desired.  The appropriate
 approach would be to write new PostScript procedures which can be
 accessed by TeX macros.
 
-  Included with TeXdraw is a set of macros for directly accessing
+   Included with TeXdraw is a set of macros for directly accessing
 PostScript functions.  These are described in an appendix (*note
 PostScript Commands::).
 
-  TeXdraw also comes with a toolbox of routines for handling much of
+   TeXdraw also comes with a toolbox of routines for handling much of
 the user interface, converting between different coordinate
 representations and the like.  The macros for coordinate decoding and
 for computations involving coordinates are described in an appendix
@@ -1206,20 +1173,20 @@ for computations involving coordinates are described in an appendix
 
 File: texdraw,  Node: Scaling,  Next: Resolution,  Up: Extending TeXdraw
 
-Scaling
--------
+5.2.1 Scaling
+-------------
 
-  The scaling commands provided in TeXdraw are designed to affect only
-the coordinate values specified in commands.  For instance, changing the
-`\setunitscale' value changes the interpretation of the coordinate in
-an `\avec (X Y)' command, but does not change the line width or
-arrowhead sizes in effect.  None of the TeXdraw scaling commands affect
-the size of TeX text produced by, for instance, the `\htext' command.
-Scale changes will however affect the positioning of text for
-subsequent commands.
+The scaling commands provided in TeXdraw are designed to affect only the
+coordinate values specified in commands.  For instance, changing the
+'\setunitscale' value changes the interpretation of the coordinate in an
+'\avec (X Y)' command, but does not change the line width or arrowhead
+sizes in effect.  None of the TeXdraw scaling commands affect the size
+of TeX text produced by, for instance, the '\htext' command.  Scale
+changes will however affect the positioning of text for subsequent
+commands.
 
-  The line parameters are changed only if the corresponding commands to
-change them are issued.  If the `\linewd' command is given, the current
+   The line parameters are changed only if the corresponding commands to
+change them are issued.  If the '\linewd' command is given, the current
 coordinate scaling is used to determine the line width.  To achieve a
 behaviour more like a global scaling, whenever the scale factor is
 changed, the line parameters should be set again.
@@ -1227,81 +1194,81 @@ changed, the line parameters should be set again.
 
 File: texdraw,  Node: Resolution,  Next: Text placement,  Prev: Scaling,  Up: Extending TeXdraw
 
-Resolution
-----------
-
-  TeXdraw scales coordinates before passing them to PostScript.
-Keeping track of the coordinate scaling is necessary, in any event, to
-allow TeXdraw to compute the maximum excursions of the coordinates.
-TeXdraw uses pixel units in its PostScript code.  One pixel unit is
-equal to 1/300 of an inch.  TeXdraw issues PostScript commands with
-integer valued pixel coordinates.  This sets the positioning resolution
-for TeXdraw.  The passing of integer valued coordinates which
-correspond to the device resolution keeps lines aligned with the device
-grid; parallel lines of the same width will be rendered with the same
-width.
-
-  The position saving mechanism in TeXdraw (*note Saving positions::)
+5.2.2 Resolution
+----------------
+
+TeXdraw scales coordinates before passing them to PostScript.  Keeping
+track of the coordinate scaling is necessary, in any event, to allow
+TeXdraw to compute the maximum excursions of the coordinates.  TeXdraw
+uses pixel units in its PostScript code.  One pixel unit is equal to
+1/300 of an inch.  TeXdraw issues PostScript commands with integer
+valued pixel coordinates.  This sets the positioning resolution for
+TeXdraw.  The passing of integer valued coordinates which correspond to
+the device resolution keeps lines aligned with the device grid; parallel
+lines of the same width will be rendered with the same width.
+
+   The position saving mechanism in TeXdraw (*note Saving positions::)
 associates the pixel coordinates of a position with the specified name.
 
-  TeXdraw uses the limited real number representation provided by TeX.
+   TeXdraw uses the limited real number representation provided by TeX.
 These operations are based on the representation of dimensions as
-real-valued numbers of points.  Internally in TeX, dimensions are
-stored 32-bit values, normalized so that 1 pt corresponds to the scaled
-point (sp) value of 65536.  Dimensions with magnitudes between 0.000015
-pt and 32767 pt can be represented.  This is also the dynamic range of
-the TeXdraw pixel coordinates passed to PostScript.  TeXdraw must
-convert from user supplied coordinates using the scaling factor (which
-itself consists of two components, the unit scale and the segment scale)
-and a pixel conversion factor.  The use of limited precision real
-numbers in these computations can cause accumulation of error when
-relative scaling is used repeatedly.
+real-valued numbers of points.  Internally in TeX, dimensions are stored
+32-bit values, normalized so that 1 pt corresponds to the scaled point
+(sp) value of 65536.  Dimensions with magnitudes between 0.000015 pt and
+32767 pt can be represented.  This is also the dynamic range of the
+TeXdraw pixel coordinates passed to PostScript.  TeXdraw must convert
+from user supplied coordinates using the scaling factor (which itself
+consists of two components, the unit scale and the segment scale) and a
+pixel conversion factor.  The use of limited precision real numbers in
+these computations can cause accumulation of error when relative scaling
+is used repeatedly.
 
 
 File: texdraw,  Node: Text placement,  Next: Intermediate PostScript file,  Prev: Resolution,  Up: Extending TeXdraw
 
-Text placement
---------------
+5.2.3 Text placement
+--------------------
 
-  While in the TeXdraw environment, TeX text is placed in a TeX box
-while PostScript code is written to the intermediate file.  At the end
-of the TeXdraw environment, the size of the drawing is determined.  A
-TeX box of this size is created.  The TeX `\special' mechanism is used
-to instruct the PostScript driver program to position the PostScript
+While in the TeXdraw environment, TeX text is placed in a TeX box while
+PostScript code is written to the intermediate file.  At the end of the
+TeXdraw environment, the size of the drawing is determined.  A TeX box
+of this size is created.  The TeX '\special' mechanism is used to
+instruct the PostScript driver program to position the PostScript
 drawing from the intermediate file in this area.  Next, the text
 generated by TeXdraw is positioned and placed in the box.  Note that
 when the document is printed, the PostScript drawing is placed on the
 page before the TeX text; TeX text will appear on top of graphics.
 
-  The rotation of text is carried out with in-line PostScript code which
-does not appear in the intermediate PostScript file.  This code is sent
-to the PostScript driver with a `\special' command.  This PostScript
-code is embedded in the dvi (device independent) file that TeX produces.
+   The rotation of text is carried out with in-line PostScript code
+which does not appear in the intermediate PostScript file.  This code is
+sent to the PostScript driver with a '\special' command.  This
+PostScript code is embedded in the dvi (device independent) file that
+TeX produces.
 
 
 File: texdraw,  Node: Intermediate PostScript file,  Prev: Text placement,  Up: Extending TeXdraw
 
-The intermediate PostScript file
---------------------------------
+5.2.4 The intermediate PostScript file
+--------------------------------------
 
-  The intermediate PostScript file consists of a header, a body and a
+The intermediate PostScript file consists of a header, a body and a
 trailer following Encapsulated PostScript File (EPSF) standards.  The
 header sets up PostScript definitions and default parameter values.  The
-trailer includes the `BoundingBox' information which gives the
+trailer includes the 'BoundingBox' information which gives the
 coordinates in default PostScript units (72 per inch) for the lower
 lefthand corner and the upper righthand corner of the drawing.  The body
 of the intermediate PostScript file contains the PostScript commands
 generated by TeXdraw.
 
-  Many moves in TeXdraw serve only to position text or to reset saved
+   Many moves in TeXdraw serve only to position text or to reset saved
 positions.  TeXdraw buffers move commands in order to be able to
 collapse runs of moves.  Only the last move of a run of moves is
 actually written to the PostScript file.  However the intermediate moves
 still affect the size of the drawing.  The expunging of moves means that
-the PostScript file `BoundingBox' information may indicate a drawing
+the PostScript file 'BoundingBox' information may indicate a drawing
 size larger than the PostScript commands themselves would warrant.
 
-  Drawing segments in TeXdraw show up in the PostScript file as saves
+   Drawing segments in TeXdraw show up in the PostScript file as saves
 and restores of the PostScript graphics state.  Segment starts are
 buffered and only written out if necessary.  This way "empty" segments
 do not generate output to the PostScript file.  These empty segments
@@ -1309,47 +1276,47 @@ arise if a segment contains only moves and text commands.  The moves
 inside the segment are not needed since they are local to the segment,
 and the text commands do not generate output to the PostScript file.
 
-  If TeXdraw is used only for moves and text, no intermediate
+   If TeXdraw is used only for moves and text, no intermediate
 PostScript file will be created.
 
 
 File: texdraw,  Node: How TeXdraw merges graphics and text,  Prev: Extending TeXdraw,  Up: More Details
 
-How TeXdraw merges graphics and text
-====================================
+5.3 How TeXdraw merges graphics and text
+========================================
 
-  TeXdraw creates a box which is the same size as the graphic.  The
+TeXdraw creates a box which is the same size as the graphic.  The
 printer driver will place the PostScript graphic into this space.  Any
 TeX text generated by the TeXdraw commands will be superimposed on this
 graphic.
 
-  The LaTeX2e front-end for TeXdraw is enabled by including the
-`texdraw' package.  The `texdraw' package automatically invokes the
-standard `graphics' package distributed with LaTeX2e.  The `graphics'
-package has support for a number of different printer drivers,
-including a number for PostScript printers.  Any options to the
-`texdraw' package are passed on to the `graphics' package.  Such an
-option can be used to select a driver other than the default one.
+   The LaTeX2e front-end for TeXdraw is enabled by including the
+'texdraw' package.  The 'texdraw' package automatically invokes the
+standard 'graphics' package distributed with LaTeX2e.  The 'graphics'
+package has support for a number of different printer drivers, including
+a number for PostScript printers.  Any options to the 'texdraw' package
+are passed on to the 'graphics' package.  Such an option can be used to
+select a driver other than the default one.
 
-  Within the `graphics' package, the driver option is used to select
-definitions for the low-level macros which generate the `\special'
+   Within the 'graphics' package, the driver option is used to select
+definitions for the low-level macros which generate the '\special'
 commands needed to request insertion of a graphics file and to rotate
-text.(1) TeXdraw uses the user-level macros defined by the `graphics'
+text.(1)  TeXdraw uses the user-level macros defined by the 'graphics'
 package (*note PostScript printer drivers::).  When not used with the
 LaTeX2e front-end, TeXdraw defines versions of these macros that are
-suitable for use with the `dvips' printer driver.
+suitable for use with the 'dvips' printer driver.
 
-  ---------- Footnotes ----------
+   ---------- Footnotes ----------
 
-  (1) Not all PostScript drivers support text rotation.
+   (1) Not all PostScript drivers support text rotation.
 
 
 File: texdraw,  Node: PostScript Commands,  Next: TeXdraw Toolbox,  Prev: More Details,  Up: Top
 
-PostScript Commands
-*******************
+Appendix A PostScript Commands
+******************************
 
-  This appendix describes a set of macros for accessing some of the
+This appendix describes a set of macros for accessing some of the
 PostScript builtin functions.  Each of these macros issues a single
 PostScript command.  The extra services provided by TeXdraw are the
 interpretation of coordinates in user units relative to the current
@@ -1357,92 +1324,86 @@ drawing segment and the writing of a pending TeXdraw move to the
 PostScript file.  This last operation establishes the current point in
 PostScript.  The user of these commands should be familiar with the
 concepts of path construction and filling in PostScript.  Further
-details on the PostScript functions used can found in the `PostScript
+details on the PostScript functions used can found in the 'PostScript
 Language Reference Manual, Second Edition', Adobe Systems,
 Addison-Wesley, 1990.
 
-  These macros are distributed in file `txdps.tex'.
+   These macros are distributed in file 'txdps.tex'.
 
-  The `\PSsetlinecap' and `\PSsetlinejoin' commands control the way
+   The '\PSsetlinecap' and '\PSsetlinejoin' commands control the way
 line ends and line joins are rendered.  The default values set by
 TeXdraw (round caps and round join) are appropriate for most drawings.
 Changes to these parameters apply to the current and subsequent paths.
 
-`\PSsetlinecap TYPE'
-     Set the line cap parameter.  The value `0' gives a butt cap; `1'
-     gives a round cap; and `2' gives a projecting square cap.  The
+'\PSsetlinecap TYPE'
+     Set the line cap parameter.  The value '0' gives a butt cap; '1'
+     gives a round cap; and '2' gives a projecting square cap.  The
      initial value is corresponds to a round cap.
+'\PSsetlinejoin TYPE'
+     Set the line join parameter.  The value '0' gives a miter join; '1'
+     gives a round join; and '2' gives a bevel join.  The initial value
+     corresponds to a round join.
 
-`\PSsetlinejoin TYPE'
-     Set the line join parameter.  The value `0' gives a miter join;
-     `1' gives a round join; and `2' gives a bevel join.  The initial
-     value corresponds to a round join.
-
-  PostScript paths and fill operations can be controlled by a number of
+   PostScript paths and fill operations can be controlled by a number of
 functions.  By design, TeXdraw always maintains a defined PostScript
 current point.  Some of the following macros cause the PostScript
 current point to become undefined.  The PostScript current point must be
-set again (say with a `\PSmoveto' command) before invoking basic
-TeXdraw commands.
-`\PSstroke'
+set again (say with a '\PSmoveto' command) before invoking basic TeXdraw
+commands.
+'\PSstroke'
      Stroke a PostScript path.  The current path is stroked with the
-     current gray level (set with `\setgray') and the current line
-     pattern (set with `\lpatt').  The PostScript current point becomes
+     current gray level (set with '\setgray') and the current line
+     pattern (set with '\lpatt').  The PostScript current point becomes
      undefined.
-
-`\PSnewpath'
+'\PSnewpath'
      Establish a new path.  The PostScript current point becomes
      undefined.
-
-`\PSclosepath'
+'\PSclosepath'
      Close a subpath.  A new subpath is started.
-
-`\PSfill'
+'\PSfill'
      Fill a region defined by a path.  Each subpath is closed and the
      enclosed regions painted with the current gray level.  The
      PostScript current point becomes undefined.  The gray level can be
-     set with the TeXdraw command `\setgray'.
+     set with the TeXdraw command '\setgray'.
 
-  The following line commands interpret coordinates relative to the
+   The following line commands interpret coordinates relative to the
 current TeXdraw scaling and drawing segment.  The specified coordinate
 affects the drawing size as determined by TeXdraw.
-`\PSlineto (X Y)'
+'\PSlineto (X Y)'
      Add a line segment to the current path.  This command is identical
-     to the TeXdraw command `\lvec'.  The PostScript current point must
+     to the TeXdraw command '\lvec'.  The PostScript current point must
      be defined before this command is issued.
-
-`\PSmoveto (X Y)'
-     Move to the coordinate specified by `(X Y)'.  The PostScript
+'\PSmoveto (X Y)'
+     Move to the coordinate specified by '(X Y)'.  The PostScript
      current point becomes defined.
 
-  The following macros provide access to the general arc commands in
+   The following macros provide access to the general arc commands in
 PostScript.  The coordinates are interpreted relative to the current
 TeXdraw scaling and drawing segment.  The specified coordinate affects
 the drawing size as determined by TeXdraw.
-`\PSarc r:RADIUS sd:START-ANGLE ed:END-ANGLE (X Y)'
+'\PSarc r:RADIUS sd:START-ANGLE ed:END-ANGLE (X Y)'
      Draw a counterclockwise arc.  The center of the arc is at the given
      position.  The radius is specified by RADIUS.  The start and end
-     angles (in degrees) are specified by START-ANGLE and END-ANGLE.
-     If the PostScript current point is defined, this command also
-     draws the line from the current point to the beginning of the arc.
-     The line and arc become part of the current path. The current
-     point becomes defined.
-
-`\PSarcn r:RADIUS sd:START-ANGLE ed:END-ANGLE (X Y)'
+     angles (in degrees) are specified by START-ANGLE and END-ANGLE.  If
+     the PostScript current point is defined, this command also draws
+     the line from the current point to the beginning of the arc.  The
+     line and arc become part of the current path.  The current point
+     becomes defined.
+'\PSarcn r:RADIUS sd:START-ANGLE ed:END-ANGLE (X Y)'
      Draw a clockwise arc.  The center of the arc is at the given
      position.  The radius is specified by RADIUS.  The start and end
-     angles (in degrees) are specified by START-ANGLE and END-ANGLE.
-     If the PostScript current point is defined, this command also
-     draws the line from the current point to the beginning of the arc.
-     The line and arc become part of the current path.  The current
-     point becomes defined.
+     angles (in degrees) are specified by START-ANGLE and END-ANGLE.  If
+     the PostScript current point is defined, this command also draws
+     the line from the current point to the beginning of the arc.  The
+     line and arc become part of the current path.  The current point
+     becomes defined.
 
-  The macro `\writeps' provides the general facility to write arbitrary
+   The macro '\writeps' provides the general facility to write arbitrary
 PostScript commands to the PostScript file.  This macro is used by the
 preceding commands and by the TeXdraw commands themselves.  This
 facility has to be used with care since changes in position or scaling
 resulting from the PostScript commands are not known to TeXdraw.
-`\writeps {<PS-COMMANDS>}'
+'\writeps {<PS-COMMANDS>}'
      Write PostScript commands to the intermediate PostScript file.
      Before the commands are inserted, any pending TeXdraw move is
      written to the PostScript file.  The PostScript scaling gives 300
@@ -1451,14 +1412,14 @@ resulting from the PostScript commands are not known to TeXdraw.
 
 File: texdraw,  Node: TeXdraw Toolbox,  Next: Examples,  Prev: PostScript Commands,  Up: Top
 
-TeXdraw Toolbox
-***************
+Appendix B TeXdraw Toolbox
+**************************
 
-  This appendix describes some of the macros supplied with TeXdraw
-which can be used to define additional commands for creating drawings.
-The macros described here work in the user specified coordinate system.
+This appendix describes some of the macros supplied with TeXdraw which
+can be used to define additional commands for creating drawings.  The
+macros described here work in the user specified coordinate system.
 Some of these toolbox macros are used by the TeXdraw commands
-themselves, others are supplied in an auxiliary file `txdtools.tex'.
+themselves, others are supplied in an auxiliary file 'txdtools.tex'.
 
 * Menu:
 
@@ -1469,85 +1430,80 @@ themselves, others are supplied in an auxiliary file `txdtools.tex'.
 
 File: texdraw,  Node: Coordinate parsing,  Next: Real arithmetic,  Up: TeXdraw Toolbox
 
-Coordinate parsing
-==================
+B.1 Coordinate parsing
+======================
 
-  The coordinate parsing macro `\getpos' is useful for creating new
+The coordinate parsing macro '\getpos' is useful for creating new
 commands.  This macro takes care of stripping leading and trailing
 blanks from coordinates specified between parentheses.  In addition,
 symbolic coordinates are translated to the corresponding relative
 coordinate using the segment offset and scaling in effect.
 
-  The macro `\currentpos' returns the relative coordinates of the
+   The macro '\currentpos' returns the relative coordinates of the
 current position.  The returned values are relative to the current
-segment and the current scaling.  The macro `\cossin' returns the
+segment and the current scaling.  The macro '\cossin' returns the
 real-valued cosine and sine of the direction of the line joining two
-points.  The macro `\vectlen' returns the length of a vector.  The
+points.  The macro '\vectlen' returns the length of a vector.  The
 results appear as the value of user supplied macro names.
 
-`\getpos (X Y)\MX\MY'
-     Decode coordinate values. The coordinates specified by `(X Y)' are
-     decoded. Symbolic coordinates are translated to the corresponding
+'\getpos (X Y)\MX\MY'
+     Decode coordinate values.  The coordinates specified by '(X Y)' are
+     decoded.  Symbolic coordinates are translated to the corresponding
      relative coordinate using the current segment offset and scaling.
      The resulting character strings representing the real-valued
-     coordinates are assigned to the macros specified by `\MX' and
-     `\MY'.
-
-`\currentpos \MX\MY'
+     coordinates are assigned to the macros specified by '\MX' and
+     '\MY'.
+'\currentpos \MX\MY'
      Return the coordinates of the current position.  The coordinates
      are relative to the current segment offset and scaling.  The
      resulting character strings representing the real-valued
-     coordinates are assigned to the macros specified by `\MX' and
-     `\MY'.
-
-`\cossin (X1 Y1)(X2 Y2)\COSA\SINA'
+     coordinates are assigned to the macros specified by '\MX' and
+     '\MY'.
+'\cossin (X1 Y1)(X2 Y2)\COSA\SINA'
      Return the cosine and sine of the direction of a vector joining two
      points.  The cosine and sine of the angle of the vector which goes
-     from `(X1 Y1)' to `(X2 Y2)'.  The character strings representing
+     from '(X1 Y1)' to '(X2 Y2)'.  The character strings representing
      these real-valued quantities are assigned to the macros specified
-     by `\COSA' and `\SINA'.
-
-`\vectlen (X1 Y1)(X2 Y2)\LEN'
+     by '\COSA' and '\SINA'.
+'\vectlen (X1 Y1)(X2 Y2)\LEN'
      Return the length of a vector joining two points.  The length of
      the vector is relative to the current scaling.  The character
-     string representing the real-valued length is assigned to the
-     macro specified by `\LEN'.
+     string representing the real-valued length is assigned to the macro
+     specified by '\LEN'.
 
 
 File: texdraw,  Node: Real arithmetic,  Next: Arrow curve,  Prev: Coordinate parsing,  Up: TeXdraw Toolbox
 
-Real arithmetic
-===============
+B.2 Real arithmetic
+===================
 
-  The TeXdraw toolbox supplies macros to perform real arithmetic on
+The TeXdraw toolbox supplies macros to perform real arithmetic on
 coordinate values.  The result appears as the value of a user supplied
 macro name.
-`\realadd {VALUE1} {VALUE2} \SUM'
+'\realadd {VALUE1} {VALUE2} \SUM'
      Add two real quantities, assigning the resultant character string
-     representing the sum to the macro `\SUM'.
-
-`\realmult {VALUE1} {VALUE2} \PROD'
+     representing the sum to the macro '\SUM'.
+'\realmult {VALUE1} {VALUE2} \PROD'
      Multiply two real quantities, assigning the resultant character
-     string representing the product to the macro `\PROD'.
-
-`\realdiv {VALUE1} {VALUE2} \RESULT'
+     string representing the product to the macro '\PROD'.
+'\realdiv {VALUE1} {VALUE2} \RESULT'
      Divide two real quantities, assigning the resultant character
      string representing the result of VALUE1/VALUE2 to the macro
-     `\RESULT'.
+     '\RESULT'.
 
 
 File: texdraw,  Node: Arrow curve,  Prev: Real arithmetic,  Up: TeXdraw Toolbox
 
-Arrow curve
-===========
+B.3 Arrow curve
+===============
 
-  This example illustrates the use of the TeXdraw toolbox routines to
-do computations with the coordinates.  The problem will be tackled in
-two parts.  First, we will produce a macro to place an arrowhead on a
-Bezier curve.  Then given this macro, we will produce a macro which can
-draw a "wiggly" line from the current position to a given coordinate.
+This example illustrates the use of the TeXdraw toolbox routines to do
+computations with the coordinates.  The problem will be tackled in two
+parts.  First, we will produce a macro to place an arrowhead on a Bezier
+curve.  Then given this macro, we will produce a macro which can draw a
+"wiggly" line from the current position to a given coordinate.
 
-  The first macro, `\cavec', uses the `\cossin' command to determine
+   The first macro, '\cavec', uses the '\cossin' command to determine
 the the cosine and sine of the angle of the line joining the second
 control point to the end point of the Bezier curve.  Recall that the
 Bezier curve is tangent to this line at the end point.  After drawing
@@ -1565,24 +1521,24 @@ mostly arrowhead, with little or no tail.
          \move ({-\cosa} -\sina)  \avec (0 0)
        \esegment}
 
-  Note the use of macros as arguments to a `\move' command.  Minus
+   Note the use of macros as arguments to a '\move' command.  Minus
 signs are put in front of the macros.  However, the value of the macro
-`\cosa' or `\sina' could be negative.  Fortunately, TeX accepts two
+'\cosa' or '\sina' could be negative.  Fortunately, TeX accepts two
 minus signs in a row and interprets the result as positive.  Note that
-the `\rmove (0 0)' command before the beginning of the segment ensures
+the '\rmove (0 0)' command before the beginning of the segment ensures
 that the Bezier curve is stroked before the arrowhead is drawn.
 
-  The second macro `\caw' builds on `\cavec'.  The goal is to produce a
+   The second macro '\caw' builds on '\cavec'.  The goal is to produce a
 wiggly vector that can be used as a pointer in a drawing.  Consider the
 following symmetrical normalized Bezier curve.
      \centertexdraw{ \move (0 0) \cavec (1.4 0.1)(-0.4 -0.1)(1 0) }
 
-  This curve has the appropriate wiggle.  Now we want to be able to draw
-this curve, appropriately scaled and rotated.  The macro `\caw' needs
-to do computations on the coordinates.  First, `\caw' uses the macros
-`\getpos' and `\currentpos' to get the positions of the end and start
-of the curve.  Next, the length of the vector is calculated using the
-macro `\vectlen'.  A local macro `\rotatecoord' is used to rotate a
+   This curve has the appropriate wiggle.  Now we want to be able to
+draw this curve, appropriately scaled and rotated.  The macro '\caw'
+needs to do computations on the coordinates.  First, '\caw' uses the
+macros '\getpos' and '\currentpos' to get the positions of the end and
+start of the curve.  Next, the length of the vector is calculated using
+the macro '\vectlen'.  A local macro '\rotatecoord' is used to rotate a
 coordinate pair about the origin, using the cosine and sine of the
 rotation angle.  The vector length is used to scale the normalized
 curve.  The remaining code draws the rotated, normalized curve.
@@ -1590,14 +1546,14 @@ curve.  The remaining code draws the rotated, normalized curve.
      \def\caw (#1 #2){
        \currentpos \xa\ya
        \cossin ({\xa} \ya)(#1 #2)\cosa\sina
-     
+
      % The nominal wiggly curve is (0 0) (1+dx dy) (-dx -dy) (1 0)
      % Find the rotated offset (dx dy) -> (du dv)
        \rotatecoord (0.4 0.1)\cosa\sina \du\dv
-     
+
      % calculate the length of the vector
        \vectlen ({\xa} \ya)(#1 #2)\len
-     
+
      % draw the curve in normalized units
        \bsegment
          \setsegscale {\len}
@@ -1605,7 +1561,7 @@ curve.  The remaining code draws the rotated, normalized curve.
          \cavec ({\tmpa} \tmpb)({-\du} -\dv)({\cosa} \sina)
        \esegment
        \move (#1 #2)}
-     
+
      % rotate a coordinate (x y)
      % arguments: (x y) cosa sina x' y'
      %  x' = cosa * x - sina * y;  y' = sina * x + cosa * y
@@ -1616,7 +1572,7 @@ curve.  The remaining code draws the rotated, normalized curve.
        \realmult \xarg {#4} \tmpa  \realmult \yarg {#3} \tmpb
        \realadd \tmpa \tmpb #6}
 
-  Finally, the new macro can be used as follows.
+   Finally, the new macro can be used as follows.
      \centertexdraw{
        \arrowheadtype t:W
        \move (0 0)
@@ -1624,20 +1580,20 @@ curve.  The remaining code draws the rotated, normalized curve.
        \move (1 0) \caw (1 1) \htext{tip at \tt (1 1)}
        \move (1 0) \caw (2 1) \htext{tip at \tt (2 1)}
        \move (1 0) \caw (2 0) \htext{tip at \tt (2 0)}
-     
+
      }
 
-  Note that the Bezier curve in the macro `\cavec' lies below the
-arrowhead.  The example then draws an arrowhead of type `W' to erase
-the part of the line below the arrowhead.
+   Note that the Bezier curve in the macro '\cavec' lies below the
+arrowhead.  The example then draws an arrowhead of type 'W' to erase the
+part of the line below the arrowhead.
 
 
 File: texdraw,  Node: Examples,  Next: Command Listing,  Prev: TeXdraw Toolbox,  Up: Top
 
-Examples
-********
+Appendix C Examples
+*******************
 
-  This appendix shows examples of the use of TeXdraw.
+This appendix shows examples of the use of TeXdraw.
 
 * Menu:
 
@@ -1648,20 +1604,20 @@ Examples
 
 File: texdraw,  Node: Block diagram,  Next: Filter response graph,  Up: Examples
 
-Block diagram of a lattice filter
-=================================
+C.1 Block diagram of a lattice filter
+=====================================
 
-  The block diagram of a lattice filter uses a library of extended
+The block diagram of a lattice filter uses a library of extended
 commands built from the basic TeXdraw commands.
 
-  The block diagram uses a "delay" block.  This is defined as a segment
+   The block diagram uses a "delay" block.  This is defined as a segment
 which leaves the current position at the end of this block.  A second
-macro, `\bdot', draws a "big" dot which is used to mark junctions of
-lines.  The `\Ttext' command centers text above a given point.  The
+macro, '\bdot', draws a "big" dot which is used to mark junctions of
+lines.  The '\Ttext' command centers text above a given point.  The
 offset to position the text is local to a segment, resulting in no
 change to the current point.  Similar macros to position text below a
-point (`\Btext'), to the left of a point (`\Ltext') and to the right of
-a point (`\Rtext') are used in the final drawing.
+point ('\Btext'), to the left of a point ('\Ltext') and to the right of
+a point ('\Rtext') are used in the final drawing.
      \def\delay {\bsegment
                    \setsegscale 0.3
                    \lvec (0 +0.5) \lvec (1 +0.5) \lvec (1 -0.5)
@@ -1675,16 +1631,16 @@ a point (`\Rtext') are used in the final drawing.
                      \textref h:C v:B  \htext (0 +0.06){#1}
                    \esegment}
 
-  Several of the block diagram elements scale with the size of the
+   Several of the block diagram elements scale with the size of the
 summing nodes.  The radius of the circles for the summing nodes is
-defined as the macro `\cradius'.  The summing nodes will have enclosed
+defined as the macro '\cradius'.  The summing nodes will have enclosed
 plus signs, appropriately scaled.  The plus sign is drawn by the macro
-`\pluss'.  The macro `\pcir' draws both the circle and the plus sign.
-The incoming lines to a summing node will be labelled with plus or
-minus signs (characters this time), placed at the appropriate position
-with respect to the center of the summing node.  These positions are
-given in terms of compass directions.  The macro `\putwnw' places text
-west by north-west relative to the center of the summing node.
+'\pluss'.  The macro '\pcir' draws both the circle and the plus sign.
+The incoming lines to a summing node will be labelled with plus or minus
+signs (characters this time), placed at the appropriate position with
+respect to the center of the summing node.  These positions are given in
+terms of compass directions.  The macro '\putwnw' places text west by
+north-west relative to the center of the summing node.
      \def\cradius {0.08}
      \def\pluss {\bsegment
                     \setsegscale {\cradius}
@@ -1698,20 +1654,20 @@ west by north-west relative to the center of the summing node.
                             \esegment}
      \def\putwnw #1{\puttext (-1.7 +1.2){#1}}
 
-  The block diagram has vectors arriving and departing from the summing
+   The block diagram has vectors arriving and departing from the summing
 nodes (circles).  One could calculate the points of intersection of the
-lines with the circles, and then enter the values into the TeXdraw
-code.  However, in this example, we implement an automated procedure.
-Two macros are needed, an arrow vector to a circle (`\avectoc') and an
-arrow vector leaving from a circle (`\avecfrc').  The macros will
-calculate the point of intersection with the circle and start or end
-the vector at the intersection point.
-
-  The arrow macros use scaling and relative positioning inside of a
-drawing segment.  In the case of the macro `\avectoc', a move is made
-to the final point (center of the circle), then within a drawing
-segment, a scaled move is made back towards the initial point to
-determine the intersection point with the circle.
+lines with the circles, and then enter the values into the TeXdraw code.
+However, in this example, we implement an automated procedure.  Two
+macros are needed, an arrow vector to a circle ('\avectoc') and an arrow
+vector leaving from a circle ('\avecfrc').  The macros will calculate
+the point of intersection with the circle and start or end the vector at
+the intersection point.
+
+   The arrow macros use scaling and relative positioning inside of a
+drawing segment.  In the case of the macro '\avectoc', a move is made to
+the final point (center of the circle), then within a drawing segment, a
+scaled move is made back towards the initial point to determine the
+intersection point with the circle.
 
      \def\avectoc (#1 #2){\currentpos \xa\ya
                           \cossin ({\xa} \ya)(#1 #2)\cosa\sina
@@ -1734,7 +1690,7 @@ determine the intersection point with the circle.
                           \move (*ex *ey)
                           \avec (#1 #2)}
 
-  Having defined these macros, we are ready to draw the block diagram.
+   Having defined these macros, we are ready to draw the block diagram.
 The first and last sections of the lattice filter are very similar,
 differing mainly in the text labels.  With more effort, code could be
 shared between the commands used to draw these blocks.
@@ -1742,9 +1698,9 @@ shared between the commands used to draw these blocks.
      \drawdim in
      \arrowheadtype t:F  \arrowheadsize l:0.08 w:0.04
      \def\pl {$\scriptscriptstyle +$} \def\mn {$\scriptscriptstyle -$}
-     
+
      \move (0 +0.63) \move (0 -0.60) \move (0 0) % compensate for the text size
-     
+
      % Input to the first stage
      \bsegment
        \Ltext{$x(n)$}
@@ -1752,7 +1708,7 @@ shared between the commands used to draw these blocks.
        \savepos (0.3 0)(*ex *ey)
      \esegment
      \move (*ex *ey)
-     
+
      % first lattice stage
      \bsegment
        \move (0 +0.4)  \avectoc (1.7 +0.4)
@@ -1772,7 +1728,7 @@ shared between the commands used to draw these blocks.
        \savepos (2.1 0)(*ex *ey)
      \esegment
      \move (*ex *ey)
-     
+
      % center section
      \bsegment
        \textref h:C v:C \htext (0.3 +0.4){$\cdots$}
@@ -1780,7 +1736,7 @@ shared between the commands used to draw these blocks.
        \savepos (0.6 0)(*ex *ey)
      \esegment
      \move (*ex *ey)
-     
+
      % last lattice stage
      \bsegment
        \move (0 +0.4)  \avectoc (1.7 +0.4)
@@ -1800,21 +1756,21 @@ shared between the commands used to draw these blocks.
      \esegment
      }
 
-  The macros used in this example are similar to the block diagram
-macros defined in the file `blockdiagram.tex'.
+   The macros used in this example are similar to the block diagram
+macros defined in the file 'blockdiagram.tex'.
 
 
 File: texdraw,  Node: Filter response graph,  Next: Geometric construction,  Prev: Block diagram,  Up: Examples
 
-Filter response graph
-=====================
+C.2 Filter response graph
+=========================
 
-  This example shows the response of a canonical filter.  TeXdraw is
-not well suited for general purpose graphing -- it has no coordinate
+This example shows the response of a canonical filter.  TeXdraw is not
+well suited for general purpose graphing -- it has no coordinate
 translation facility nor does it have separate X and Y scaling.
 Nonetheless, for certain simple graphs, TeXdraw is adequate.
 
-  In this example, macro `\ticklab' places a labelled axis tick at a
+   In this example, macro '\ticklab' places a labelled axis tick at a
 given position.  The data is specified in a straightforward manner,
 having been scaled beforehand to give the desired aspect ratio for the
 graph.
@@ -1830,9 +1786,9 @@ graph.
      \def\Rtext #1{\bsegment
                      \textref h:L v:C \htext (+0.08 0){#1}
                    \esegment}
-     
+
      \move (2.4 -0.3)    % move to set the size
-     
+
      \move (0 0)
      % Axes
      \avec (0 +1.4)
@@ -1841,7 +1797,7 @@ graph.
      \ticklab (0.8 0) {$\ds {\pi \over 2N} $}
      \ticklab (1.2 0) {$\omega_s$}
      \ticklab (1.6 0) {$\ds {\pi \over N} $}
-     
+
      \linewd 0.025
      \move (0 1)
      \lvec (0.4 1)
@@ -1860,10 +1816,10 @@ graph.
 
 File: texdraw,  Node: Geometric construction,  Prev: Filter response graph,  Up: Examples
 
-Geometric construction
-======================
+C.3 Geometric construction
+==========================
 
-  This example shows a geometric construction which places an ellipse
+This example shows a geometric construction which places an ellipse
 tangent to an enclosing circle.  The size of the ellipse is determined
 from geometric considerations.  Macros are used to modularize the code.
 The example alters the unit scale factor.  This allows the drawing to be
@@ -1873,7 +1829,7 @@ carried out in units normalized to the radius of the circle.
      \arrowheadtype t:V \arrowheadsize l:0.08 w:0.04
      \linewd 0.01
      \setunitscale 1.5            % circle will have radius 1.5 inches
-     
+
      \def\Btext #1{\bsegment
                      \textref h:C v:T \htext (0 -0.04){#1}
                    \esegment}
@@ -1900,16 +1856,16 @@ carried out in units normalized to the radius of the circle.
                       \relsegscale 0.5
                       \move (0 {#1}) \Ltext {#2}
                     \esegment}
-     
+
      \lcir r:1                         % circle
      \move (-1.05 0) \lvec ( 1.05 0)   % axes
      \move (0 -1.05) \lvec (0  1.05)
-     
+
      \move (0 0) \lvec (0.707 0.707) \bdot
      \rmove (0.02 0.02) \textref h:L v:B \htext {X}
      \move (0.707 -0.707) \bdot
      \textref h:R v:T \htext(-0.02 -0.02){O}
-     
+
      \move (0.5 0)                     % center of ellipse
      \bsegment
        \lellip rx:0.435 ry:0.804
@@ -1922,259 +1878,257 @@ carried out in units normalized to the radius of the circle.
 
 File: texdraw,  Node: Command Listing,  Next: Command Index,  Prev: Examples,  Up: Top
 
-Alphabetic listing of commands
-******************************
+Appendix D Alphabetic listing of commands
+*****************************************
 
-`\arrowheadsize l:LENGTH w:WIDTH'
+'\arrowheadsize l:LENGTH w:WIDTH'
      Set the arrowhead size to be LENGTH units long and WIDTH units
      wide.  The width is measured across the "base" of the arrowhead.
      The initial arrowhead size has a LENGTH of 0.16 inches and a WIDTH
      of 0.08 inches.
 
-`\arrowheadtype t:TYPE'
-     Set the arrowhead type to TYPE, where TYPE is one of `F', `T',
-     `W', `V', or `H'.  There are two kinds of arrowheads.  The first
-     kind is a triangle.  There are 3 variants: type `T' is an empty
-     triangle, type `F' is a filled triangle (using the current gray
-     level for lines), type `W' is a triangle filled with white.  The
-     second kind of arrowhead is an open ended Vee.  There are 2
-     variants: type `V' has the stem continue to the tip, type `H' has
-     the stem stop at the base of the arrowhead.  The initial arrowhead
-     type is `T'.
-
-`\avec (X Y)'
-     Draw a line with an arrowhead from the current position to `(X
-     Y)'.  The new current position is `(X Y)'.  The arrowhead is
-     aligned with the line, with the tip at `(X Y)'.
-
-`\begin{texdraw}'
+'\arrowheadtype t:TYPE'
+     Set the arrowhead type to TYPE, where TYPE is one of 'F', 'T', 'W',
+     'V', or 'H'.  There are two kinds of arrowheads.  The first kind is
+     a triangle.  There are 3 variants: type 'T' is an empty triangle,
+     type 'F' is a filled triangle (using the current gray level for
+     lines), type 'W' is a triangle filled with white.  The second kind
+     of arrowhead is an open ended Vee.  There are 2 variants: type 'V'
+     has the stem continue to the tip, type 'H' has the stem stop at the
+     base of the arrowhead.  The initial arrowhead type is 'T'.
+
+'\avec (X Y)'
+     Draw a line with an arrowhead from the current position to '(X Y)'.
+     The new current position is '(X Y)'.  The arrowhead is aligned with
+     the line, with the tip at '(X Y)'.
+
+'\begin{texdraw}'
      Start a TeXdraw drawing.  The drawing is terminated with an
-     `\end{texdraw}' command.  This command is for use with LaTeX.
+     '\end{texdraw}' command.  This command is for use with LaTeX.
 
-`\bsegment'
+'\bsegment'
      Start a drawing segment.  The coordinate system is shifted such
-     that the current position corresponds to the coordinate `(0 0)'.
+     that the current position corresponds to the coordinate '(0 0)'.
      Changes to scaling, position and line parameters stay local to the
      drawing segment.
 
-`\btexdraw'
+'\btexdraw'
      Start a TeXdraw drawing.  The drawing is terminated with an
-     `\etexdraw' command.
+     '\etexdraw' command.
 
-`\centertexdraw { ... }'
-     Center a TeXdraw box.  The argument contains TeXdraw commands.
-     The resulting box has the horizontal size `\hsize' and height equal
-     to the height of the drawing.
+'\centertexdraw { ... }'
+     Center a TeXdraw box.  The argument contains TeXdraw commands.  The
+     resulting box has the horizontal size '\hsize' and height equal to
+     the height of the drawing.
 
-`\clvec (X1 Y1)(X2 Y2)(X3 Y3)'
+'\clvec (X1 Y1)(X2 Y2)(X3 Y3)'
      Draw a Bezier curve from the current position to the coordinate
-     `(X3 Y3)' which becomes the new current position.  The coordinates
-     `(X1 Y1)' and `(X2 Y2)' serve as control points for the curve.
+     '(X3 Y3)' which becomes the new current position.  The coordinates
+     '(X1 Y1)' and '(X2 Y2)' serve as control points for the curve.
      Only the last coordinate given is used to update the size of the
      drawing.
 
-`\drawbb'
+'\drawbb'
      Draw a ruled box around the effective size of a drawing produced by
      TeXdraw commands.
 
-`\drawdim DIM'
+'\drawdim DIM'
      Set the units to DIM.  The argument DIM can be any valid TeX
-     dimension unit.  The units are used to interpret coordinate
-     values.  Examples of valid units: `cm', `mm', `in', `pt', and `bp'.
+     dimension unit.  The units are used to interpret coordinate values.
+     Examples of valid units: 'cm', 'mm', 'in', 'pt', and 'bp'.
 
-`\end{texdraw}'
-     End a TeXdraw drawing started with a `\begin{texdraw}' command.
+'\end{texdraw}'
+     End a TeXdraw drawing started with a '\begin{texdraw}' command.
      The resulting TeXdraw drawing is placed in a box with height equal
      to the height of the drawing and width equal to the width of the
      drawing.  The depth of the box is zero.  This command is for use
      with LaTeX.
 
-`\esegment'
+'\esegment'
      End a drawing segment.  The current position in effect before the
-     corresponding `\bsegment' command is restored.  The scaling and
+     corresponding '\bsegment' command is restored.  The scaling and
      line parameter values revert to those in effect before the
-     corresponding `\bsegment' was invoked.
+     corresponding '\bsegment' was invoked.
 
-`\etexdraw'
-     End a TeXdraw drawing started with a `\btexdraw' command.  The
+'\etexdraw'
+     End a TeXdraw drawing started with a '\btexdraw' command.  The
      resulting TeXdraw drawing is placed in a box with height equal to
      the height of the drawing and width equal to the width of the
      drawing.  The depth of the box is zero.
 
-`\everytexdraw { ... }'
+'\everytexdraw { ... }'
      Specify TeXdraw commands to be executed at the beginning of every
      TeXdraw drawing.
 
-`\fcir f:LEVEL r:RADIUS'
+'\fcir f:LEVEL r:RADIUS'
      Draw a filled circle with center at the current position.  The
-     radius is specified by RADIUS.  The circle is painted with the
-     gray level specified by LEVEL.  A gray level of 1 corresponds to
-     white, with decreasing values getting darker.  The level 0 is full
-     black.  This command does not draw a line along the circumference.
-     The drawing size is increased if necessary to contain the circle.
+     radius is specified by RADIUS.  The circle is painted with the gray
+     level specified by LEVEL.  A gray level of 1 corresponds to white,
+     with decreasing values getting darker.  The level 0 is full black.
+     This command does not draw a line along the circumference.  The
+     drawing size is increased if necessary to contain the circle.
 
-`\fellip f:LEVEL rx:X-RADIUS ry:Y-RADIUS'
+'\fellip f:LEVEL rx:X-RADIUS ry:Y-RADIUS'
      Draw a filled ellipse with center at the current position.  The
      radius in the X direction is specified by X-RADIUS.  The radius in
      the Y direction is specified by Y-RADIUS.  The ellipse is painted
      with the gray level specified by LEVEL.  A gray level of 1
      corresponds to white, with decreasing values getting darker.  The
-     level 0 is full black.  This command does not draw a line along
-     the boundary of the ellipse.  The drawing size is increased if
+     level 0 is full black.  This command does not draw a line along the
+     boundary of the ellipse.  The drawing size is increased if
      necessary to contain the ellipse.
 
-`\htext (X Y){TEXT}'
-`\htext {TEXT}'
+'\htext (X Y){TEXT}'
+'\htext {TEXT}'
      The first form of this command places the TeX text TEXT
-     horizontally with the text reference point at the coordinate `(X
-     Y)'.  The new current position is `(X Y)'.  The second form of
-     this command places the TeX text TEXT horizontally with the text
+     horizontally with the text reference point at the coordinate '(X
+     Y)'.  The new current position is '(X Y)'.  The second form of this
+     command places the TeX text TEXT horizontally with the text
      reference point at the current position.  The text reference point
-     is set with the `\textref' command.
+     is set with the '\textref' command.
 
-`\ifill f:LEVEL'
+'\ifill f:LEVEL'
      Close the current path and paint the interior of the region with
      gray level LEVEL.  The line around the path is not drawn.  Gray
      levels are real values from 0 (black) through intermediate values
      (grays) to 1 (white).
 
-`\larc r:RADIUS sd:START-ANGLE ed:END-ANGLE'
+'\larc r:RADIUS sd:START-ANGLE ed:END-ANGLE'
      Draw a counterclockwise arc.  The center of the arc is at the
      current position.  The radius is specified by RADIUS.  The start
      and end angles (in degrees) are specified by START-ANGLE and
      END-ANGLE.  This command does not affect the limits (size) of the
      drawing.
 
-`\lcir r:RADIUS'
+'\lcir r:RADIUS'
      Draw a circle with center at the current position.  The radius is
      specified by RADIUS.  This command draws a line along the
      circumference of the circle.  The drawing size is increased if
      necessary to contain the circle.
 
-`\lellip rx:X-RADIUS ry:Y-RADIUS'
-     Draw an ellipse with center at the current position.  The radius
-     in the X direction is specified by X-RADIUS.  The radius in the Y
+'\lellip rx:X-RADIUS ry:Y-RADIUS'
+     Draw an ellipse with center at the current position.  The radius in
+     the X direction is specified by X-RADIUS.  The radius in the Y
      direction is specified by Y-RADIUS.  The drawing size is increased
      if necessary to contain the ellipse.
 
-`\lfill f:LEVEL'
+'\lfill f:LEVEL'
+
      Close the current path, draw the line around the path using the
      current grey level for lines and paint the interior of the region
      with specified gray level LEVEL.  Gray levels are real values from
      0 (black) through intermediate values (grays) to 1 (white).
 
-`\linewd WIDTH'
+'\linewd WIDTH'
      Set the line width to WIDTH units.  Initially WIDTH is 0.01 inches
      (corresponding to 3 pixels at 300 pixels to the inch).
 
-`\lpatt (PATTERN)'
-     Set lines to have the pattern `(PATTERN)'.  A pattern is a
-     sequence of on/off lengths separated by blanks and enclosed in
-     parentheses.  The lengths alternately specify the length of a dash
-     and the length of a gap between dashes.  Each length is
-     interpreted using the current scaling and drawing units.  The
-     pattern is used cyclically.  The empty pattern signifies a solid
-     line.  The initial line pattern is a solid line, corresponding to
-     the empty pattern `\lpatt ()'.
+'\lpatt (PATTERN)'
+     Set lines to have the pattern '(PATTERN)'.  A pattern is a sequence
+     of on/off lengths separated by blanks and enclosed in parentheses.
+     The lengths alternately specify the length of a dash and the length
+     of a gap between dashes.  Each length is interpreted using the
+     current scaling and drawing units.  The pattern is used cyclically.
+     The empty pattern signifies a solid line.  The initial line pattern
+     is a solid line, corresponding to the empty pattern '\lpatt ()'.
 
-`\lvec (X Y)'
-     Draw a line from the current position to coordinate `(X Y)'.  The
-     new current position is `(X Y)'.
+'\lvec (X Y)'
+     Draw a line from the current position to coordinate '(X Y)'.  The
+     new current position is '(X Y)'.
 
-`\move (X Y)'
-     Move to coordinate `(X Y)'.  The new current position is `(X Y)'.
+'\move (X Y)'
+     Move to coordinate '(X Y)'.  The new current position is '(X Y)'.
 
-`\ravec (DX DY)'
+'\ravec (DX DY)'
      Draw a line with an arrowhead from the current position, DX units
      in the X direction and Y units in the Y direction.  The final
      position becomes the new current position.  The arrowhead is
      aligned with the line, with the tip at the new current position.
 
-`\relsegscale VALUE'
+'\relsegscale VALUE'
      Adjust the segment scale factor by multiplying by VALUE.  This has
      the effect of multiplying the current overall scale factor by the
-     same factor.  The overall scaling factor is the product of the
-     unit scale factor and the segment scale factor.
-
-`\relunitscale VALUE'
-     Adjust the unit scale factor by multiplying by VALUE.  This has
-     the effect of multiplying the overall scale factor by the same
-     factor.  The overall scaling factor is the product of the unit
+     same factor.  The overall scaling factor is the product of the unit
      scale factor and the segment scale factor.
 
-`\rlvec (DX DY)'
+'\relunitscale VALUE'
+     Adjust the unit scale factor by multiplying by VALUE.  This has the
+     effect of multiplying the overall scale factor by the same factor.
+     The overall scaling factor is the product of the unit scale factor
+     and the segment scale factor.
+
+'\rlvec (DX DY)'
      Draw a line from the current position, DX units in the X direction
      and DY units in the Y direction.  The final position becomes the
      new current position.
 
-`\rmove (DX DY)'
+'\rmove (DX DY)'
      Move from the current position, DX units in the X direction and DY
      units in the Y direction.  The final position becomes the new
      current position.
 
-`\rtext td:ANGLE (x y){TEXT}'
-`\rtext td:ANGLE {TEXT}'
-     The first form of this command places the TeX text TEXT at an
-     angle with the text reference point at the coordinate `(X Y)'.
-     The new current position is `(X Y)'.  The second form of this
-     command places the TeX text TEXT at an angle with the text
-     reference point at the current position.  In both cases, the TeX
-     text is placed in a box and the box is rotated counterclockwise by
-     ANGLE degrees about the text reference point.  The text reference
-     point is set with the `\textref' command.
-
-`\savecurrpos (*PX *PY)'
+'\rtext td:ANGLE (x y){TEXT}'
+'\rtext td:ANGLE {TEXT}'
+     The first form of this command places the TeX text TEXT at an angle
+     with the text reference point at the coordinate '(X Y)'.  The new
+     current position is '(X Y)'.  The second form of this command
+     places the TeX text TEXT at an angle with the text reference point
+     at the current position.  In both cases, the TeX text is placed in
+     a box and the box is rotated counterclockwise by ANGLE degrees
+     about the text reference point.  The text reference point is set
+     with the '\textref' command.
+
+'\savecurrpos (*PX *PY)'
      Save the current position as the absolute position referenced by
-     `(*PX *PY)'.
+     '(*PX *PY)'.
 
-`\savepos (X Y)(*PX *PY)'
-     Save the coordinate position `(X Y)' as the absolute position
-     referenced by `(*PX *PY)'.  The coordinate `(X Y)' is interpreted
+'\savepos (X Y)(*PX *PY)'
+     Save the coordinate position '(X Y)' as the absolute position
+     referenced by '(*PX *PY)'.  The coordinate '(X Y)' is interpreted
      in the normal fashion as a coordinate relative to the current
      segment, using the current scaling factors and drawing unit.
 
-`\setgray LEVEL'
+'\setgray LEVEL'
      Set the gray level of lines.  Gray levels are real values from 0
      (black) through intermediate values (gray) to 1 (white).  The
      initial gray level is 0 corresponding to black.
 
-`\setsegscale SCALE'
+'\setsegscale SCALE'
      Set the segment scale factor.  The argument SCALE is a real number
-     which is used to scale coordinate values.  The overall scale
+     which is used to scale coordinate values.  The overall scale factor
+     is the product of the unit scale factor and the segment scale
+     factor.
+
+'\setunitscale SCALE'
+     Set the unit scaling to SCALE.  The argument SCALE is a real number
+     which is used to scale coordinate values.  The overall scaling
      factor is the product of the unit scale factor and the segment
      scale factor.
 
-`\setunitscale SCALE'
-     Set the unit scaling to SCALE.  The argument SCALE is a real
-     number which is used to scale coordinate values.  The overall
-     scaling factor is the product of the unit scale factor and the
-     segment scale factor.
-
-`\texdrawbox { ... }'
+'\texdrawbox { ... }'
      Create a TeXdraw box.  The argument contains TeXdraw commands.
      This macro returns a TeX box with height equal to the height of the
      drawing and width equal to the width of the drawing.  The depth of
      the box is zero.
 
-`\textref h:H-REF v:V-REF'
+'\textref h:H-REF v:V-REF'
      Set the text reference point for subsequent text commands.  The
-     horizontal reference point H-REF is one of `L', `C' or `R' (left,
+     horizontal reference point H-REF is one of 'L', 'C' or 'R' (left,
      center or right).  The vertical reference point V-REF is one of
-     `T', `C' or `B' (top, center or bottom).  For rotated text, the
+     'T', 'C' or 'B' (top, center or bottom).  For rotated text, the
      reference point is determined before rotation.  The initial text
-     reference point corresponds to `\textref h:L v:B'.
+     reference point corresponds to '\textref h:L v:B'.
 
-`\vtext (x y){TEXT}'
-`\vtext {TEXT}'
+'\vtext (x y){TEXT}'
+'\vtext {TEXT}'
      The first form of this command places the TeX text TEXT vertically
-     with the text reference point at the coordinate `(X Y)'.  The new
-     current position is `(X Y)'.  The second form of this command
+     with the text reference point at the coordinate '(X Y)'.  The new
+     current position is '(X Y)'.  The second form of this command
      places the TeX text TEXT vertically with the text reference point
      at the current position.  In both cases, the TeX text is placed in
      a box and the box is rotated counterclockwise by 90 degrees about
-     the text reference point.  The text reference point is set with
-     the `\textref' command.
-
+     the text reference point.  The text reference point is set with the
+     '\textref' command.
 
 
 File: texdraw,  Node: Command Index,  Next: Concept Index,  Prev: Command Listing,  Up: Top
@@ -2182,74 +2136,76 @@ File: texdraw,  Node: Command Index,  Next: Concept Index,  Prev: Command Listin
 Command Index
 *************
 
+
 * Menu:
 
-* \arc:                                  Circles and arcs.
-* \arrowheadsize:                        Line vectors.
-* \arrowheadtype:                        Line vectors.
-* \avec:                                 Line vectors.
-* \begin{texdraw}:                       Accessing TeXdraw.
-* \bsegment:                             Drawing segments.
-* \btexdraw:                             Accessing TeXdraw.
-* \centertexdraw:                        Accessing TeXdraw.
-* \clvec:                                Bezier curves.
-* \cossin:                               Coordinate parsing.
-* \currentpos:                           Coordinate parsing.
-* \drawbb:                               Drawing size.
+* \arc:                                  Circles and arcs.    (line  57)
+* \arrowheadsize:                        Line vectors.        (line  87)
+* \arrowheadtype:                        Line vectors.        (line  78)
+* \avec:                                 Line vectors.        (line  34)
+* \begin{texdraw}:                       Accessing TeXdraw.   (line  91)
+* \bsegment:                             Drawing segments.    (line  14)
+* \btexdraw:                             Accessing TeXdraw.   (line  84)
+* \centertexdraw:                        Accessing TeXdraw.   (line 100)
+* \clvec:                                Bezier curves.       (line  20)
+* \cossin:                               Coordinate parsing.  (line  31)
+* \currentpos:                           Coordinate parsing.  (line  25)
+* \drawbb:                               Drawing size.        (line  32)
 * \drawdim:                              Coordinate specification.
-* \end{texdraw}:                         Accessing TeXdraw.
-* \esegment:                             Drawing segments.
-* \etexdraw:                             Accessing TeXdraw.
-* \everytexdraw:                         Accessing TeXdraw.
-* \fcir:                                 Circles and arcs.
-* \fellip:                               Circles and arcs.
-* \getpos:                               Coordinate parsing.
-* \htext:                                TeX text.
-* \ifill:                                Fill commands.
-* \lcir:                                 Circles and arcs.
-* \lellip:                               Circles and arcs.
-* \lfill:                                Fill commands.
-* \linewd:                               Line vectors.
-* \lvec:                                 Line vectors.
-* \move:                                 Line vectors.
-* \PSarc:                                PostScript Commands.
-* \PSarcn:                               PostScript Commands.
-* \PSclosepath:                          PostScript Commands.
-* \PSfill:                               PostScript Commands.
-* \PSlineto:                             PostScript Commands.
-* \PSmoveto:                             PostScript Commands.
-* \PSnewpath:                            PostScript Commands.
-* \PSsetlinecap:                         PostScript Commands.
-* \PSsetlinejoin:                        PostScript Commands.
-* \PSstroke:                             PostScript Commands.
-* \ravec:                                Line vectors.
-* \realadd:                              Real arithmetic.
-* \realdiv:                              Real arithmetic.
-* \realmult:                             Real arithmetic.
-* \relsegscale:                          Scaling coordinates.
-* \relunitscale:                         Scaling coordinates.
-* \rlvec:                                Line vectors.
-* \rmove:                                Line vectors.
-* \rtext:                                TeX text.
-* \savecurrpos:                          Saving positions.
-* \savepos:                              Saving positions.
-* \setgray:                              Line vectors.
-* \setsegscale:                          Scaling coordinates.
-* \setunitscale:                         Scaling coordinates.
-* \textref:                              TeX text.
-* \vectlen:                              Coordinate parsing.
-* \vtext:                                TeX text.
-* \writeps:                              PostScript Commands.
-* arc:                                   PostScript Commands.
-* arcn:                                  PostScript Commands.
-* closepath:                             PostScript Commands.
-* fill:                                  PostScript Commands.
-* lineto:                                PostScript Commands.
-* moveto:                                PostScript Commands.
-* newpath:                               PostScript Commands.
-* setlinecap:                            PostScript Commands.
-* setlinejoin:                           PostScript Commands.
-* stroke:                                PostScript Commands.
+                                                              (line  14)
+* \end{texdraw}:                         Accessing TeXdraw.   (line  94)
+* \esegment:                             Drawing segments.    (line  18)
+* \etexdraw:                             Accessing TeXdraw.   (line  86)
+* \everytexdraw:                         Accessing TeXdraw.   (line 104)
+* \fcir:                                 Circles and arcs.    (line  36)
+* \fellip:                               Circles and arcs.    (line  48)
+* \getpos:                               Coordinate parsing.  (line  19)
+* \htext:                                TeX text.            (line  14)
+* \ifill:                                Fill commands.       (line  24)
+* \lcir:                                 Circles and arcs.    (line  32)
+* \lellip:                               Circles and arcs.    (line  43)
+* \lfill:                                Fill commands.       (line  20)
+* \linewd:                               Line vectors.        (line  64)
+* \lvec:                                 Line vectors.        (line  31)
+* \move:                                 Line vectors.        (line  30)
+* \PSarc:                                PostScript Commands. (line  71)
+* \PSarcn:                               PostScript Commands. (line  78)
+* \PSclosepath:                          PostScript Commands. (line  47)
+* \PSfill:                               PostScript Commands. (line  49)
+* \PSlineto:                             PostScript Commands. (line  59)
+* \PSmoveto:                             PostScript Commands. (line  62)
+* \PSnewpath:                            PostScript Commands. (line  44)
+* \PSsetlinecap:                         PostScript Commands. (line  25)
+* \PSsetlinejoin:                        PostScript Commands. (line  28)
+* \PSstroke:                             PostScript Commands. (line  40)
+* \ravec:                                Line vectors.        (line  53)
+* \realadd:                              Real arithmetic.     (line   9)
+* \realdiv:                              Real arithmetic.     (line  14)
+* \realmult:                             Real arithmetic.     (line  11)
+* \relsegscale:                          Scaling coordinates. (line  34)
+* \relunitscale:                         Scaling coordinates. (line  24)
+* \rlvec:                                Line vectors.        (line  49)
+* \rmove:                                Line vectors.        (line  46)
+* \rtext:                                TeX text.            (line  46)
+* \savecurrpos:                          Saving positions.    (line  15)
+* \savepos:                              Saving positions.    (line  17)
+* \setgray:                              Line vectors.        (line  74)
+* \setsegscale:                          Scaling coordinates. (line  29)
+* \setunitscale:                         Scaling coordinates. (line  20)
+* \textref:                              TeX text.            (line  60)
+* \vectlen:                              Coordinate parsing.  (line  37)
+* \vtext:                                TeX text.            (line  29)
+* \writeps:                              PostScript Commands. (line  93)
+* arc:                                   PostScript Commands. (line  71)
+* arcn:                                  PostScript Commands. (line  78)
+* closepath:                             PostScript Commands. (line  47)
+* fill:                                  PostScript Commands. (line  49)
+* lineto:                                PostScript Commands. (line  59)
+* moveto:                                PostScript Commands. (line  62)
+* newpath:                               PostScript Commands. (line  44)
+* setlinecap:                            PostScript Commands. (line  25)
+* setlinejoin:                           PostScript Commands. (line  28)
+* stroke:                                PostScript Commands. (line  40)
 
 
 File: texdraw,  Node: Concept Index,  Prev: Command Index,  Up: Top
@@ -2257,173 +2213,218 @@ File: texdraw,  Node: Concept Index,  Prev: Command Index,  Up: Top
 Concept Index
 *************
 
+
 * Menu:
 
-* accessing TeXdraw <1>:                 Accessing TeXdraw.
-* accessing TeXdraw:                     Using TeXdraw with LaTeX.
-* angle of a vector:                     Coordinate parsing.
-* arcs <1>:                              Circles and arcs.
-* arcs:                                  PostScript Commands.
-* arrowhead parameters:                  Line vectors.
-* arrows:                                Line vectors.
-* Bezier curves:                         Bezier curves.
-* circles:                               Circles and arcs.
-* command syntax:                        Command syntax.
-* coordinate parsing:                    Coordinate parsing.
+* accessing TeXdraw:                     Accessing TeXdraw.    (line  6)
+* accessing TeXdraw <1>:                 Using TeXdraw with LaTeX.
+                                                               (line  6)
+* angle of a vector:                     Coordinate parsing.   (line 19)
+* arcs:                                  Circles and arcs.     (line  6)
+* arcs <1>:                              PostScript Commands.  (line 70)
+* arrowhead parameters:                  Line vectors.         (line 64)
+* arrows:                                Line vectors.         (line  6)
+* Bezier curves:                         Bezier curves.        (line  6)
+* circles:                               Circles and arcs.     (line  6)
+* command syntax:                        Command syntax.       (line  6)
+* coordinate parsing:                    Coordinate parsing.   (line 19)
 * coordinate specification:              Coordinate specification.
-* coordinate, symbolic:                  Saving positions.
-* coordinates:                           TeXdraw coordinates.
-* cosine of a vector direction:          Coordinate parsing.
-* current position <1>:                  Coordinate parsing.
-* current position <2>:                  Line vectors.
-* current position:                      Initial current position.
-* current position in PostScript:        PostScript Commands.
-* curves:                                Bezier curves.
-* dashed lines:                          Line vectors.
-* direction of a line:                   Coordinate parsing.
-* distribution:                          Distribution.
-* dotted lines:                          Line vectors.
-* drawing segments:                      Drawing segments.
-* dvi2ps printer driver:                 PostScript printer drivers.
-* dvialw printer driver:                 PostScript printer drivers.
-* dvilaser printer driver:               PostScript printer drivers.
-* dvips printer driver <1>:              PostScript printer drivers.
-* dvips printer driver <2>:              Introduction.
-* dvips printer driver:                  How TeXdraw merges graphics and text.
-* dvipsone printer driver:               PostScript printer drivers.
-* dvitops printer driver:                PostScript printer drivers.
-* dviwindo printer driver:               PostScript printer drivers.
-* ellipses:                              Circles and arcs.
+                                                               (line  6)
+* coordinate, symbolic:                  Saving positions.     (line  6)
+* coordinates:                           TeXdraw coordinates.  (line  6)
+* cosine of a vector direction:          Coordinate parsing.   (line 19)
+* current position:                      Line vectors.         (line  6)
+* current position <1>:                  Initial current position.
+                                                               (line  6)
+* current position <2>:                  Coordinate parsing.   (line 19)
+* current position in PostScript:        PostScript Commands.  (line 34)
+* curves:                                Bezier curves.        (line  6)
+* dashed lines:                          Line vectors.         (line 64)
+* direction of a line:                   Coordinate parsing.   (line 19)
+* distribution:                          Distribution.         (line  6)
+* dotted lines:                          Line vectors.         (line 64)
+* drawing segments:                      Drawing segments.     (line  6)
+* 'dvi2ps' printer driver:               PostScript printer drivers.
+                                                               (line 13)
+* 'dvialw' printer driver:               PostScript printer drivers.
+                                                               (line 13)
+* 'dvilaser' printer driver:             PostScript printer drivers.
+                                                               (line 13)
+* 'dvips' printer driver:                Introduction.         (line 25)
+* 'dvips' printer driver <1>:            PostScript printer drivers.
+                                                               (line 13)
+* 'dvips' printer driver <2>:            How TeXdraw merges graphics and text.
+                                                               (line 19)
+* 'dvipsone' printer driver:             PostScript printer drivers.
+                                                               (line 13)
+* 'dvitops' printer driver:              PostScript printer drivers.
+                                                               (line 13)
+* 'dviwindo' printer driver:             PostScript printer drivers.
+                                                               (line 13)
+* ellipses:                              Circles and arcs.     (line  6)
 * Encapsulated PostScript File:          Intermediate PostScript file.
+                                                               (line  6)
 * errors while using TeXdraw:            Errors while using TeXdraw.
-* example, arrow curve:                  Arrow curve.
-* example, block diagram:                Examples.
+                                                               (line  6)
+* example, arrow curve:                  Arrow curve.          (line  6)
+* example, block diagram:                Examples.             (line  6)
 * example, circle and ellipse:           Geometric construction.
+                                                               (line  6)
 * example, graph:                        Filter response graph.
+                                                               (line  6)
 * fill operations, interaction with drawing segments: Drawing paths.
-* filled circles:                        Circles and arcs.
-* filling regions <1>:                   PostScript Commands.
-* filling regions:                       Fill commands.
-* graphics package <1>:                  PostScript printer drivers.
-* graphics package <2>:                  Accessing TeXdraw.
-* graphics package <3>:                  How TeXdraw merges graphics and text.
-* graphics package:                      Introduction.
+                                                               (line  6)
+* filled circles:                        Circles and arcs.     (line  6)
+* filling regions:                       Fill commands.        (line  6)
+* filling regions <1>:                   PostScript Commands.  (line 34)
+* 'graphics' package:                    Introduction.         (line 25)
+* 'graphics' package <1>:                Accessing TeXdraw.    (line 37)
+* 'graphics' package <2>:                PostScript printer drivers.
+                                                               (line  6)
+* 'graphics' package <3>:                How TeXdraw merges graphics and text.
+                                                               (line 11)
 * graphics placement:                    How TeXdraw merges graphics and text.
-* gray levels for lines:                 Line vectors.
-* implementation:                        Extending TeXdraw.
+                                                               (line  6)
+* gray levels for lines:                 Line vectors.         (line 64)
+* implementation:                        Extending TeXdraw.    (line  6)
 * initial current position:              Initial current position.
-* invoking TeXdraw <1>:                  Accessing TeXdraw.
-* invoking TeXdraw:                      Using TeXdraw with LaTeX.
-* LaTeX <1>:                             Accessing TeXdraw.
+                                                               (line  6)
+* invoking TeXdraw:                      Accessing TeXdraw.    (line  6)
+* invoking TeXdraw <1>:                  Using TeXdraw with LaTeX.
+                                                               (line  6)
+* LaTeX:                                 Introduction.         (line 25)
+* LaTeX <1>:                             Accessing TeXdraw.    (line  6)
 * LaTeX <2>:                             Using TeXdraw with LaTeX.
-* LaTeX:                                 Introduction.
-* length of a vector:                    Coordinate parsing.
-* line cap:                              PostScript Commands.
-* line join:                             PostScript Commands.
-* line width:                            Line vectors.
-* lines <1>:                             PostScript Commands.
-* lines:                                 Line vectors.
-* listing of commands:                   Command Listing.
-* moves <1>:                             Line vectors.
-* moves:                                 PostScript Commands.
-* oztex printer driver:                  PostScript printer drivers.
-* painting regions:                      Fill commands.
-* paths <1>:                             PostScript Commands.
-* paths <2>:                             Drawing paths.
-* paths:                                 Fill commands.
-* pctexps printer driver:                PostScript printer drivers.
-* pctexwin printer driver:               PostScript printer drivers.
+                                                               (line  6)
+* length of a vector:                    Coordinate parsing.   (line 19)
+* line cap:                              PostScript Commands.  (line 25)
+* line join:                             PostScript Commands.  (line 25)
+* line width:                            Line vectors.         (line 64)
+* lines:                                 Line vectors.         (line  6)
+* lines <1>:                             PostScript Commands.  (line 58)
+* listing of commands:                   Command Listing.      (line  6)
+* moves:                                 Line vectors.         (line  6)
+* moves <1>:                             PostScript Commands.  (line 58)
+* 'oztex' printer driver:                PostScript printer drivers.
+                                                               (line 13)
+* painting regions:                      Fill commands.        (line  6)
+* paths:                                 Fill commands.        (line  6)
+* paths <1>:                             Drawing paths.        (line  6)
+* paths <2>:                             PostScript Commands.  (line 34)
+* 'pctexps' printer driver:              PostScript printer drivers.
+                                                               (line 13)
+* 'pctexwin' printer driver:             PostScript printer drivers.
+                                                               (line 13)
 * placement of graphics and text:        How TeXdraw merges graphics and text.
-* plain TeX:                             Accessing TeXdraw.
+                                                               (line  6)
+* plain TeX:                             Accessing TeXdraw.    (line  6)
 * position specification:                Coordinate specification.
-* positions, saving:                     Saving positions.
-* PostScript commands:                   PostScript Commands.
-* PostScript printer drivers <1>:        PostScript printer drivers.
-* PostScript printer drivers:            How TeXdraw merges graphics and text.
-* printer drivers <1>:                   PostScript printer drivers.
-* printer drivers:                       How TeXdraw merges graphics and text.
+                                                               (line  6)
+* positions, saving:                     Saving positions.     (line  6)
+* PostScript commands:                   PostScript Commands.  (line  6)
+* PostScript printer drivers:            PostScript printer drivers.
+                                                               (line  6)
+* PostScript printer drivers <1>:        How TeXdraw merges graphics and text.
+                                                               (line 19)
+* printer drivers:                       PostScript printer drivers.
+                                                               (line  6)
+* printer drivers <1>:                   How TeXdraw merges graphics and text.
+                                                               (line 19)
 * problems while using TeXdraw:          Errors while using TeXdraw.
-* psprint driver:                        PostScript printer drivers.
-* relative positioning:                  Line vectors.
-* relative scaling:                      Scaling coordinates.
-* resolution:                            Resolution.
-* rotated text <1>:                      PostScript printer drivers.
-* rotated text <2>:                      TeX text.
-* rotated text <3>:                      Text placement.
-* rotated text:                          How TeXdraw merges graphics and text.
-* saving positions:                      Saving positions.
-* scaling:                               Scaling.
-* scaling coordinates:                   Scaling coordinates.
-* segment scale:                         Scaling coordinates.
-* segments:                              Drawing segments.
-* sine of a vector direction:            Coordinate parsing.
-* size of the drawing:                   Drawing size.
-* stroking lines <1>:                    PostScript Commands.
-* stroking lines:                        Drawing paths.
-* symbolic coordinate:                   Saving positions.
-* syntax of commands:                    Command syntax.
-* texdraw package <1>:                   How TeXdraw merges graphics and text.
-* texdraw package <2>:                   Using TeXdraw with LaTeX.
-* texdraw package:                       Accessing TeXdraw.
-* text commands:                         TeX text.
+                                                               (line  6)
+* 'psprint' driver:                      PostScript printer drivers.
+                                                               (line 13)
+* relative positioning:                  Line vectors.         (line 40)
+* relative scaling:                      Scaling coordinates.  (line  6)
+* resolution:                            Resolution.           (line  6)
+* rotated text:                          TeX text.             (line 23)
+* rotated text <1>:                      TeX text.             (line 40)
+* rotated text <2>:                      PostScript printer drivers.
+                                                               (line 13)
+* rotated text <3>:                      Text placement.       (line 16)
+* rotated text <4>:                      How TeXdraw merges graphics and text.
+                                                               (line 19)
+* saving positions:                      Saving positions.     (line  6)
+* scaling:                               Scaling.              (line  6)
+* scaling coordinates:                   Scaling coordinates.  (line  6)
+* segment scale:                         Scaling coordinates.  (line  6)
+* segments:                              Drawing segments.     (line  6)
+* sine of a vector direction:            Coordinate parsing.   (line 19)
+* size of the drawing:                   Drawing size.         (line  6)
+* stroking lines:                        Drawing paths.        (line  6)
+* stroking lines <1>:                    PostScript Commands.  (line 34)
+* symbolic coordinate:                   Saving positions.     (line  6)
+* syntax of commands:                    Command syntax.       (line  6)
+* 'texdraw' package:                     Accessing TeXdraw.    (line 37)
+* 'texdraw' package <1>:                 Using TeXdraw with LaTeX.
+                                                               (line  6)
+* 'texdraw' package <2>:                 How TeXdraw merges graphics and text.
+                                                               (line 11)
+* text commands:                         TeX text.             (line  6)
 * text placement:                        How TeXdraw merges graphics and text.
-* text rotation <1>:                     How TeXdraw merges graphics and text.
-* text rotation <2>:                     TeX text.
-* text rotation <3>:                     PostScript printer drivers.
-* text rotation:                         Text placement.
-* textures printer driver:               PostScript printer drivers.
-* unit scale:                            Scaling coordinates.
-* vectors:                               Line vectors.
-* vertical text:                         TeX text.
-* width of lines:                        Line vectors.
-* xdvi driver:                           PostScript printer drivers.
+                                                               (line  6)
+* text rotation:                         TeX text.             (line 23)
+* text rotation <1>:                     TeX text.             (line 40)
+* text rotation <2>:                     PostScript printer drivers.
+                                                               (line 13)
+* text rotation <3>:                     Text placement.       (line 16)
+* text rotation <4>:                     How TeXdraw merges graphics and text.
+                                                               (line 19)
+* 'textures' printer driver:             PostScript printer drivers.
+                                                               (line 13)
+* unit scale:                            Scaling coordinates.  (line  6)
+* vectors:                               Line vectors.         (line  6)
+* vertical text:                         TeX text.             (line 23)
+* width of lines:                        Line vectors.         (line 64)
+* 'xdvi' driver:                         PostScript printer drivers.
+                                                               (line 13)
 
 
 
 Tag Table:
-Node: Top606
-Node: Introduction2013
-Node: Distribution4007
-Node: TeXdraw Commands4442
-Node: Accessing TeXdraw5051
-Ref: Accessing TeXdraw-Footnote-19799
-Node: Command syntax9962
-Node: TeXdraw coordinates11150
-Node: Coordinate specification12511
-Node: Line vectors13706
-Node: TeX text19481
-Node: Circles and arcs23795
-Node: Bezier curves27792
-Node: Fill commands29776
-Node: Drawing Segments and Scaling32306
-Node: Drawing segments32733
-Node: Drawing paths33823
-Node: Saving positions35437
-Node: Scaling coordinates38329
-Node: Drawing size41305
-Node: Initial current position43113
-Node: Using TeXdraw with LaTeX43900
-Node: PostScript printer drivers45369
-Node: More Details46494
-Node: Errors while using TeXdraw46989
-Node: Extending TeXdraw49297
-Node: Scaling50855
-Node: Resolution51784
-Node: Text placement53471
-Node: Intermediate PostScript file54531
-Node: How TeXdraw merges graphics and text56274
-Ref: How TeXdraw merges graphics and text-Footnote-157642
-Node: PostScript Commands57699
-Node: TeXdraw Toolbox62660
-Node: Coordinate parsing63200
-Node: Real arithmetic65352
-Node: Arrow curve66151
-Node: Examples70212
-Node: Block diagram70459
-Node: Filter response graph77224
-Node: Geometric construction78912
-Node: Command Listing81197
-Node: Command Index92653
-Node: Concept Index96690
+Node: Top607
+Node: Introduction2011
+Node: Distribution4010
+Node: TeXdraw Commands4451
+Node: Accessing TeXdraw5062
+Ref: Accessing TeXdraw-Footnote-19814
+Node: Command syntax9978
+Node: TeXdraw coordinates11174
+Node: Coordinate specification12544
+Node: Line vectors13743
+Node: TeX text19509
+Node: Circles and arcs23837
+Node: Bezier curves27841
+Node: Fill commands29825
+Node: Drawing Segments and Scaling32361
+Node: Drawing segments32790
+Node: Drawing paths33885
+Node: Saving positions35510
+Node: Scaling coordinates38413
+Node: Drawing size41397
+Node: Initial current position43212
+Node: Using TeXdraw with LaTeX44005
+Node: PostScript printer drivers45478
+Node: More Details46609
+Node: Errors while using TeXdraw47106
+Node: Extending TeXdraw49425
+Node: Scaling50992
+Node: Resolution51933
+Node: Text placement53634
+Node: Intermediate PostScript file54705
+Node: How TeXdraw merges graphics and text56461
+Ref: How TeXdraw merges graphics and text-Footnote-157839
+Node: PostScript Commands57897
+Node: TeXdraw Toolbox62883
+Node: Coordinate parsing63444
+Node: Real arithmetic65602
+Node: Arrow curve66405
+Node: Examples70453
+Node: Block diagram70720
+Node: Filter response graph77472
+Node: Geometric construction79152
+Node: Command Listing81423
+Node: Command Index92888
+Node: Concept Index97919
 
 End Tag Table