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% VMSUSER.TEX Suggested user document (VMS specific) for Crudetype.
% Formatting could be much improved.


\font\big = cmbx10 at 14.4 truept
\font\bold  = cmb10  scaled \magstephalf
\font\rm  = cmr10  scaled \magstephalf
\font\commandfont = cmtt10 scaled \magstephalf
\def\titlefont{\big}
\rm

\def\title#1{\message{ Title: #1}\centerline {\titlefont#1}}

\def\space#1{{\hglue 0.0 em plus #1 fill}}
\def\author#1{\vskip\parskip\line{\space3 #1\space2}}
\def\sign#1{\author{#1}}

\hsize 170 true mm \vsize 257 true mm


\parindent = 0.0 em
\parskip = 8mm plus 35mm minus 4mm

\def\address{\parskip=0mm\obeylines}




% and here are my own macros


% These macros for verbatim scanning are copied from MANMAC.TEX. But we cant
% use the vertical bar for a temporary escape character as WEAVE catches it.
% So we will use ! instead and hope for the best
\chardef\other=12
\def\ttverbatim{\begingroup
  \catcode`\\=\other  \catcode`\{=\other  \catcode`\}=\other  \catcode`\$=\other
  \catcode`\&=\other  \catcode`\#=\other  \catcode`\%=\other  \catcode`\~=\other
  \catcode`\_=\other  \catcode`\^=\other
  \obeyspaces \obeylines \tt}

\def\begintt{$$\let\par=\endgraf \ttverbatim \parskip=0pt
  \catcode`\!=0 \rightskip-5pc \ttfinish}
{\catcode`\!=0 !catcode`!\=\other   % ! is temporary escape character
  !obeylines !obeyspaces    % end of line is active
  !gdef!ttfinish#1^^M#2\endtt{#1!vbox{#2}!endgroup$$}}

% \font\ninett=cmtt9
% that is the normal WEB practice, but in view of the definition of
% commandfont above, it seemed inadvisable...

\font\ninett = cmtt10 scaled \magstephalf

\let\mc=\ninett 

\def\C{{Crudetype}}
\def\D{{\mc DVI}}


\title{Lineprinter output from \TeX.}

\C\ is a program that takes a standard \TeX\ \D\ file and generates output
suitable for printing on a lineprinter. Of course no lineprinter can possibly
do justice to the power of \TeX, but it does give a fairly good idea of what
your output would look like on a respectable printer.Thus \C\ is very useful
in the early stages of
debugging \TeX\ input, because you do not need any special equipment to run it
and lineprinter output is less expensive than laserprinter output. The output
file can also be
inspected with editors such as EDT or TPU, but for this you need a 132-column-wide
terminal. Also because VDUs cannot show overstruck characters, these appear
incorrectly on the next line.  To use \C, you
must first issue the following commands:\begintt
$CRT :== $UHAH:[208.CRUDE]CRUDETYPE \endtt
This command defines {\tt CRT} as what
VMS calls a ``foreign''
command. It is only valid at one site; users at other sites must find
out where the file is actually located.
It only needs to be given once per login, so you can insert it
into your {\tt LOGIN.COM} file.
Then you can run the program by: \begintt
$CRT (qualifiers) DVI_FILE \endtt
The {\tt DVI\_FILE} must be specified. If you do not specify a directory or an
extension \C\ will look in your current default directory and assume the
default extension {\tt .DVI}.  The qualifiers are all optional; they will
not work unless {\tt CRT} is defined as above. The permitted qualifiers are:

/m (number) Magnify by (number)/100. Now obsolete, see /x and /y
below. Some magnification is needed because most \TeX\ characters are
narrower than lineprinter characters. But I do not know any plausible
algorithm for adjusting the magnification according to the fonts being
used. The least bad alternative seemed to be to allow the user to
specify a magnification; the default is adjusted so some files look
reasonable on a lineprinter.

/q           (quiet) Suppress information messages.

/r           (run-on) Suppress form feeds; instead \C\ prints a string 
             like {\tt ----- PAGE n -----} .

/s           (squash) Suppress blank lines in the printed output. Normally, 
output is double-spaced to allow space for super- and subscripts.

/f (number)  (first page) Start printing at the first page whose {\tt count0}
             parameter is greater than or equal to the specified number.

/c (number)  (count) Stop after this many pages. The defaults for /c and /f are
$\pm 10^6$, so normally \C\ will print all pages.

/p (printfile)   Send output to the named file instead of the default. The 
             default output file name is:
               (your current default directory)({\tt DVI} file name)({\tt .PRI}).
             But note that when this qualifier is used VMS sometimes alters 
             the name: for example {\tt /p HORSE} generates the output file 
{\tt HORSE.DAT} instead of {\tt HORSE}.

/b (batch-view) Generates output more suitable for viewing on a
terminal. Essentially, this means that overstruck characters get
omitted. This is no use unless your terminal is 132
characters wide.

/i (number) (Immediate) Generates output directly on a terminal. The
number is optional. If it is specified, say $N$, then Crudetype will
pause every $N$ lines and type the message `print return to continue'.
If $N=0$, Crudetype does not pause. If $N$ is not given, it defaults
to 20.

/d (file-spec) Take font files from this directory, instead of the
default, which is {\tt TEX\_FONTS:*.TFM}

/x (number), /y (number) Horizontal and vertical magnifications. As
with /m, these are percentages; default = 100\% = keep the {\tt DVI}
file's magnification.



\sign{R.M.Damerell, Mathematics Dept, RHBNC, Egham, Surrey, UK.}


\bye