From a1e3748b2a855f1a0c875df7f9585e1a01c44d9a Mon Sep 17 00:00:00 2001
From: Karl Berry <karl@freefriends.org>
Date: Thu, 7 Dec 2017 23:14:48 +0000
Subject: pm-isomath (7dec17)

git-svn-id: svn://tug.org/texlive/trunk@46012 c570f23f-e606-0410-a88d-b1316a301751
---
 .../source/latex/pm-isomath/pm-isomath.dtx         | 326 ++++++++++-----------
 1 file changed, 163 insertions(+), 163 deletions(-)

(limited to 'Master/texmf-dist/source/latex/pm-isomath')

diff --git a/Master/texmf-dist/source/latex/pm-isomath/pm-isomath.dtx b/Master/texmf-dist/source/latex/pm-isomath/pm-isomath.dtx
index 7461ddd510e..1c45e9a74c4 100644
--- a/Master/texmf-dist/source/latex/pm-isomath/pm-isomath.dtx
+++ b/Master/texmf-dist/source/latex/pm-isomath/pm-isomath.dtx
@@ -50,7 +50,7 @@ the manifest.txt file, and the derived files:
 % of this license or (at your option) any later version.
 % The latest version of this license is in
 %    http://www.latex-project.org/lppl.txt
-% and version 1.3 or later is part of all distributions of LaTeX
+% and version 1.3c or later is part of all distributions of LaTeX
 % version 2003/12/01 or later.
 %
 % This file has the LPPL maintenance status "author-maintained".
@@ -72,7 +72,7 @@ the manifest.txt file, and the derived files:
 %</driver>
 %<style>\ProvidesPackage{pm-isomath}[%
 %<*driver,style>
-2017/08/22 v.1.0.00 
+2017/12/07 v.1.0.02 
 %<style>Poor man package for typesetting ISO compliant math when using pdfLaTeX]
 %</driver,style>
 %<*driver>
@@ -83,7 +83,7 @@ the manifest.txt file, and the derived files:
 \GetFileInfo{pm-isomath.dtx}
 \title{\texttt{PM-ISOmath}\\The Poor Man ISO math bundle}
 \date{\fileversion\space--- \filedate}
- \author{Claudio Beccari\thanks{E-mail: \texttt{claudio dot beccari at gmail dot com}}}
+\author{Claudio Beccari\thanks{E-mail: \texttt{claudio dot beccari at gmail dot com}}}
  
 \usepackage{metalogo,multicol,enumitem,url,booktabs}
 \usepackage[utf8]{inputenc}
@@ -121,9 +121,9 @@ the manifest.txt file, and the derived files:
 % \begin{abstract}
 % The ISO regulation for typesetting math in the field of physics
 % and technology are pretty stringent and imply legal questions
-% that we do not treat here; It suffices to say the an
-% ``Expertise'' for a Legal Court that does not fulfil such
-% regulations in certain countries may be rejected by the Court,
+% that we do not treat here; it suffices to say that in certain
+% countries an ``Expertise'' for a Legal Court that does not
+% fulfil such regulations may be rejected by the Court,
 % independently from its expert contents.
 %
 % Authors may not like them, but in the filed of \emph{applied
@@ -143,20 +143,20 @@ the manifest.txt file, and the derived files:
 % The ISO regulations (formerly ISO\,31/XI, now ISO\,80000) are
 % stringent rules to typeset mathematics in the domains of physics
 % and applied sciences; their title explicitly mentions ``physics
-% and technology'', but their careful reading let understand that
-% they apply to alla sciences that use the ``mathematics of
+% and technology'', but their careful reading lets understand that
+% they apply to all sciences that use the ``mathematics of
 % quantities''. Such entities form a special group or space,
-% where the elements are couples of two ordered elements $(x, y)$,
+% where the elements are couples of two ordered entities $(x, y)$,
 % where $y$ represents the unit of measure and $x$ represents the
 % ratio of the quantity to the unit of measure. Such paired
-% elements may not e separated, therefore some special
+% entities may not e separated, therefore some special
 % mathematical rules are established in order to operate on
-% such entities.
+% quanties.
 %
-% Add to these special mathematical bases the facto that the
+% Add to these special mathematical bases the fact that the
 % measure component of the quantity is pretty fuzzy and it
 % is always accompanied by a certain degree of uncertainty;
-% metrologists are the the masters in measuring quantities
+% metrologists are the masters in measuring quantities
 % and handling their measures and uncertainties, but although
 % for simplicity measures are handled by lay people as rational
 % numbers (after all aren't the the ratio of something to be
@@ -166,7 +166,7 @@ the manifest.txt file, and the derived files:
 % Furthermore quantities are so many that any work in applied
 % sciences should contain a nomenclature list in order to
 % explain which symbol is used for which quantity. This is
-% where the ISO regulations set some order and they published
+% where the ISO regulations set some order and establish
 % a long list of named quantities with their preferred symbols
 % and their ``normal'' units according to the prescriptions
 % of the Comité International des Pois et Mésures, that
@@ -185,8 +185,8 @@ the manifest.txt file, and the derived files:
 %
 % There are no problems when typesetting applied science
 % documents with \LuaLaTeX\ or \XeLaTeX, at least if the
-% proper OpenType math fonts are used; Such fonts have
-% available so mani slots (code points) that may contain
+% proper OpenType math fonts are used; such fonts have
+% available so many slots (code points) that may contain
 % any variation of any glyph; it suffices to specify the
 % option |math style = ISO| to the math handling package
 % |unicode-math| and to select an OpenType math font. The
@@ -199,13 +199,14 @@ the manifest.txt file, and the derived files:
 % academic and/or research institutions.
 %
 % For private users I'd suggest to download the PDF document
-% \url{https://www.nist.gov/pml/special-publication-811-extended-%contents}. This document has been produced by the National
-% Institute for Science and Technology, the Institutions that
+% \url{https://www.nist.gov/pml/special-publication-811-extended-
+%contents}. This document has been produced by the National
+% Institute for Science and Technology, the Institution that
 % several years ago was appointed to replace the United States
-% National Bureau of Standards. Thei staff is made essentially
+% National Bureau of Standards. Their staff is made essentially
 % by metrologists and this guide is written to give precise
 % instructions for handling the applied science mathematics
-% according to the ISO Regulations; Is establishes also several
+% according to the ISO regulations; it establishes also several
 % rules for writing text about mathematics and metrology. It
 % is extremely valuable for anglophones, but, with the due
 % differences concerning the mother languages, it is extremely
@@ -215,16 +216,16 @@ the manifest.txt file, and the derived files:
 % Users of \pdfLaTeX, on the opposite are in trouble. In facts
 % this typesetting program suffers from an inherited limitation:
 % math fonts are encoded with the old 128 glyph encodings; this
-% is not a limitation  set forth by the underlying interpreter
-% \pdfTeX. Matter of fact there exist the quite recent
-% LibertinusT1math fonts for \pdfLaTeX, created by Michal Sharpe,
-% that to my best knowledge are the only ones with 256 glyph
+% is not a limitation set forth by the underlying interpreter
+% \pdfTeX. Matter of fact there exists the quite recent
+% LibertinusT1math fonts for \pdfLaTeX, created by Michael Sharpe,
+% that, to my best knowledge, are the only math fonts with 256 glyph
 % encodings. Package |libertinust1math| accepts the |ISO| option
 % that allows to fulfil the ISO regulations; it accepts other
-% options depending on which the number of math groups, beyond
-% the essential first four ones, increases by three to six units,
-% reaching a maximum of ten; there remains enough free math
-% groups to satisfy any user requirement.
+% options; depending on which options are specified the number
+% of math groups, beyond the essential first four ones, increases
+% by three to six units, reaching a maximum of ten; there remains
+% enough free math groups to satisfy most user requirements.
 %
 % But even while using such LibertinusT1math fonts, \pdfTeX\ 
 % suffers from another handicap derived from the knuthian
@@ -234,7 +235,8 @@ the manifest.txt file, and the derived files:
 % by \LaTeXe.). I am not complaining about these \pdfTeX\ and
 % \LaTeX\ limitations; for decades people have been happily
 % typesetting math with results that are much superior to any
-% other typesetting program if it does not use some \TeX\ software.
+% other typesetting program at least when it does not use some
+% \TeX\ software.
 %
 % The handicap I am talking about is the way math alphabets are
 % handled at the moment by \pdfTeX and \LaTeX; such alphabets
@@ -271,14 +273,14 @@ the manifest.txt file, and the derived files:
 %
 % Therefore, dear reader, before using the poor man solutions
 % of this package, try |ISOmath|, if your font set passes all
-% the requirements described in this package documentation,
+% the requirements described in that package documentation,
 % you don't need the poor man patches offered by this package.
 %
 % \section{ISO rules summary}
 % This summary does not replace the original ISO document nor
 % what is written in the instructions published by NIST. It
 % simply recalls those rules that this package tries to implement.
-% In the following the word ``quantity'' is used to represent
+% In what follows, the word ``quantity'' is used to represent
 % any physical entity that may be measured according to the
 % metrological standards; the word ``variable'' is used to
 % represent a mathematical entity that represents variable data.
@@ -291,7 +293,7 @@ the manifest.txt file, and the derived files:
 %   variable data; but computer programs are not mathematics, 
 %   rather they are a special language that tells the computer 
 %   what to do, even mathematics, but the language is not the 
-%   one that represents math. Unfortunately som acronyms have 
+%   one that represents math. Unfortunately some acronyms have 
 %   gained strong popularity and wide usage, but they are 
 %   forbidden by the ISO rules; example: \emph{CMRR} is often 
 %   used to mean ``common mode rejection ratio'', but this is 
@@ -301,53 +303,54 @@ the manifest.txt file, and the derived files:
 %   meaning of what it typesets.
 % \item
 %   All quantity symbols must be set in italics, slanted type
-%   is allowed, but serifed italics should be referred, unless 
+%   is allowed, but serifed italics should be preferred unless 
 %   the ISO rules prescribe a sans serif font. This implies that
-% the differential symbol be in upright font to avoid confusion
-% with the physical quantity $d$; the Napier number `e' must be
-% set in upright font to avoid confusion with the elementary
-% electric charge $e$; the imaginary unit j in electrical
-% engineering, i in other applied sciences) be in upright font
-% in order to avoid confusion with the electric current density
-% $j$ or the electric current $i$; more difficult: the
-% transcendental number $\ISOpi=3.14159\dots$ be distinguished 
-% from the plane angle $\pi$; and similar other numerical constants represented by Latin or Greek letters.
+%   the differential symbol be in upright font to avoid confusion
+%   with the physical quantity $d$; the Napier number `e' must be
+%   set in upright font to avoid confusion with the elementary
+%   electric charge $e$; the imaginary unit j in electrical
+%   engineering, (i in other applied sciences) be in upright font
+%   in order to avoid confusion with the electric current density
+%   $j$ or the electric current $i$; more difficult: the
+%   transcendental number $\ISOpi=3.14159\dots$ should be distinguished 
+%   from the plane angle $\pi$; and similar other numerical constants
+%   represented by Latin or Greek letters.
 % \item
 %   All symbols that do not represent quantities should be 
 %   typeset in an upright font, preferably a serifed font, 
 %   except when the ISO rules require a sans serif font.
-%   This rule include numbers and their digits, symbols that 
+%   This rule includes numbers and their digits, symbols that 
 %   represent constant numeric values, all appositions both 
 %   in subscript and superscript position. Appositions are not 
 %   quantities or variables: for example in $V_i$, the 
 %   subscript $i$ is a variable because it represents the $i$-th 
 %   element in a sequence, such as $V_0, V_1, V_2, \dots$; on 
-%   the opposite $V_{\mathrm{i}}$ is an apposition because `i' 
-%   means, say, `input'.
+%   the opposite $V_{\mathrm{i}}$ the subscript is an apposition
+%   because `i' means, say, `input'.
 % \item
 %   Upright bold roman or black board bold symbols represent sets.
 % \item
-%   Italic bold symbols represent matrices; une column matrices
+%   Italic bold symbols represent matrices; one column matrices
 %   may represent vectors in an algebraic way and should be 
-%   treated as any other matrix; generally multirow and multicolumn 
+%   treated as any other matrix; in general multirow and multicolumn 
 %   matrices are typeset with uppercase letters, while lowercase 
 %   ones are reserved for vectors; but in some sciences also vectors 
 %   may have uppercase letters. Geometrical vectors that might be 
-%   typeset wit a medium series upper o lowercase italic letter 
+%   typeset with a medium series upper o lowercase italic letter 
 %   with an arrow on top of it are nor treated by the ISO 
 %   regulations that speak of vectors irrespective if they are 
-%   considered as one column matrices od oriented segments; 
+%   considered as one column matrices or oriented segments; 
 %   apparently oriented segments should be treated the same as 
 %   one column matrices.
 % \item
 %   Labels to geometrical entities, such as points, segments,
-%    angles (not their measures) should be set in upright 
-%    medium series sans serif fonts; the same rule applies 
-%    to labels used in sketches and drawings representing 
-%    machinery, electric circuitry, and the like when the label 
-%    refers to an object and not to its measure: ``the lens 
-%    $\mathsf{L}_1$'', ``the switch $\mathsf{S}_2$'', ``the 
-%    planetary gear $\mathsf{G}_3$'', and so on.
+%   angles (not their measures) should be set in upright 
+%   medium series sans serif fonts; the same rule applies 
+%   to labels used in sketches and drawings representing 
+%   machinery, electric circuitry, and the like when the label 
+%   refers to an object and not to its measure: ``the lens 
+%   $\mathsf{L}_1$'', ``the switch $\mathsf{S}_2$'', ``the 
+%   planetary gear $\mathsf{G}_3$'', and so on.
 % \item
 %   Tensors should be set in slanted bold sans serif font.
 % \item 
@@ -363,51 +366,51 @@ the manifest.txt file, and the derived files:
 %\begin{itemize}[noitemsep]
 %\item
 %   Uppercase greek letters are taken from the ``operators'' 
-%   alphabet and are letter symbols; therefore they are upright; 
+%   alphabet and are letter symbols; they are upright; 
 %   but if they represent quantities they must be in italics, 
 %   or at least slanted;
 %\item
-%   Lowercase Greek letters are taken from the ``letters'' alphabet
-%   and are ordinary symbols; they are slanted, and this is fine, 
-%   but as ordinary symbols they cannot be modified by commands 
+%   Lowercase Greek letters are taken from the ``letters'' math alphabet
+%   and are ordinary symbols; they are oblique, and this is fine, 
+%   but as ordinary math symbols they cannot be modified by commands 
 %   such as |\mathrm|; furthermore upright lowercase Greek letters
-%   are not available.
+%   are not available, at least not directly.
 %\end{itemize}
 %
 % \section{Some existing solutions}
 % Several packages to be used with \pdfLaTeX\ allow for upright
 % Greek letters, especially those packages for French typography,
-% where the national rules (in contrst with the ISO regulations)
+% where the national rules (in contrast with the ISO regulations)
 % require that all math entities typeset with Greek letters be
-% upright. Among these the |fourier| and the |kpfont|. Other
+% upright. Among these the |fourier| and the |kpfonts|. Other
 % packages such as |newpxmath| and |newtxmath| are intended for
 % general use, but with suitable options and extra math groups
-% let the user employ upright lowercase letters as well as
-% slanted uppercase ones.
+% let the user employ upright lowercase Greek letters as well as
+% oblique uppercase ones.
 %
 % Package |libertinust1math| allows the use of the 256~glyph
 % encoded fonts and are less sensitive to the limit of 16~math
-% groups, Is many options allow to use the various font styles
+% groups. Its many options allow to use the various font styles
 % without requiring the |\boldmath| declaration; this implies
 % that medium and bold series are both preloaded without
 % actually using extra math alphabets beyond the small number
 % it uses for its full functionality. An option |ISO| is
-% already available to fulfill the ISO regulations. Maybe
-% the only drawback of the fonts used is that they match text
-% fonts that are blacker than the standard Computer or Latin
-% Modern fonts. The auxiliary font selection commands used in
-% the |ISOmath| package are already implemented with this
-% |libertinust1math| one.
+% already available to fulfil the ISO regulations. Maybe
+% the only drawback of the fonts used is that they are intended to 
+% match  the Libertinus text fonts that are blacker than the
+% standard Computer or Latin Modern ones. The auxiliary font
+% selection commands used in the |ISOmath| package are already
+% implemented with this |libertinust1math| one.
 %
 % Of course the |ISOmath| package might solve all problems if the
 % user math environment has the necessary functionalities, in
-% particular all the math alphabets needed for the task and
+% particular all the math alphabets needed for the task and if
 % there are no difficulties with the number of math groups.
 %
 % \section{The poor man solution}
 % The poor man solution is  very simple in theory; it handles
 % text fonts in math expressions through the |\text| command
-% of the |amsmath| package; of course there are functionalities
+% provided by the |amsmath| package; of course there are functionalities
 % to chose families series and shapes in a comfortable way
 % by means of the powerful command definition commands provided
 % by the |xparse| package; for Greek letters it uses the
@@ -437,12 +440,12 @@ the manifest.txt file, and the derived files:
 %
 % Nevertheless they work very well with the ISO regulations
 % and in spite of the disadvantages listed above, they are
-% usable without problems. 'This documentation is typeset
-% with Latin Modern fonts and this very package. The examples
-% shown in a following chapter show the ease with which the
-% ISO regulations may be fulfilled.
+% usable without problems. 'This very documentation is typeset
+% with Latin Modern fonts. The examples shown in a following
+% section show the ease with which the ISO regulations may be
+% fulfilled.
 %
-% There are other Greek fonts that may be used in place if
+% There are other Greek fonts that may be used in place of
 % those of the CBfonts collection, especially those distributed
 % by the Greek Font Society (GFS) that are already part of the
 % \TeX\ system distribution; they are LGR encoded and have their
@@ -477,7 +480,7 @@ the manifest.txt file, and the derived files:
 %\cs{MathGreek}\marg{letter}\marg{family}\oarg{series}\parg{shape}
 %\end{ttsintassi}
 % where \cs{MathLatin} sets the text encoding to |T1|, while
-% \cs{MathGreek} set it to |LGR|. In both commands the arguments
+% \cs{MathGreek} sets it to |LGR|. In both commands the arguments
 % specified with \marg{family}\oarg{series}\parg{shape} are all
 % optional, including the first one in spite of being surrounded
 % by curly braces. In both cases the default values for each
@@ -526,7 +529,7 @@ the manifest.txt file, and the derived files:
 %
 % The package defines other macros for fulfilling the rules
 % relative to the differential symbol and the numerical constants
-% represented with letters; Furthermore defines the commands
+% represented with letters; furthermore it defines the commands
 % for the |\ohm| unit of measure and the |\micro| SI prefix;
 % this latter macro uses a special shape of the CBfonts where
 % an upright shape with serifed lowercase Greek letters is
@@ -544,7 +547,7 @@ the manifest.txt file, and the derived files:
 % \subparagraph{ISO Greek letters}
 % In this example we typeset an array in math mode, where
 % we show all the Greek letters that can be typeset with
-% the \cs{ISO}\meta{letter} macros; the array is typeset
+% the \cs{ISO}\meta{lettername} macros; the array is typeset
 % in normal math style, but the ISO letters are in bold
 % style so that there is no confusion with a normal
 % bold math setting; some letters, equal to
@@ -591,7 +594,7 @@ the manifest.txt file, and the derived files:
 %$i.68\,\micro\ohm\,\mathrm{cm}$ (1.68\unit{\micro\ohm\,cm})
 %\end{verbatim}
 %\subparagraph{A tensor}
-%\[ \vectorsymbol{D} =\epsilon_0\vectorsymbol{\epsilon}\ped{r}\vectorsymbol{E}\]
+%\[ \vectorsymbol{D} =\epsilon_0\tensorsymbol{\epsilon}\ped{r}\vectorsymbol{E}\]
 %is typeset with the following code
 %\begin{verbatim}
 %\[ 
@@ -599,7 +602,7 @@ the manifest.txt file, and the derived files:
 %\]
 %\end{verbatim}
 %\subparagraph{Solid angle}
-% An energy flux of light form a isomorph source that irradiates
+% An energy flux of light form a isomorphic source that irradiates
 % the power $P$ through the solid angle $\Omega$ generates
 % a flux \[\Phi = \frac{P}{\Omega}\] is typeset with the following
 % code
@@ -610,13 +613,16 @@ the manifest.txt file, and the derived files:
 % as the ISO rules require, instead of upright, as \LaTeX\ sets
 % them by default.
 % \subparagraph{A bold formula}
-% This is the very important inverse Laplace transform
+% This is the very important inverse Laplace transform\footnote{Some
+% packages may have a contorl sequence to inerta a Cauchy principal
+% value integral sign into a math expression; here we fake it by
+% means of the superposition of a normal integral sign to a minus sign,}
 %{\boldmath\[
 %f(t) = \frac{1}{2\ISOpi\iu} -\mkern-19mu\int_{\sigma-\iu\infty}^{\sigma+\iu\infty}\eu^{pt}\diff p \qquad \text{for } \sigma > \sigma\ped{c}
 %\]}
-%%typeset with the following code
+% typeset with the following code
 %\begin{verbatim}
-%{\boldmath\[f(t)=
+%{\boldmath\[
 %f(t) = \frac{1}{2\ISOpi\iu} -\mkern-19mu
 %   \int_{\sigma-\iu\infty}^{\sigma+\iu\infty}\eu^{pt}\diff p 
 %     \qquad \text{for } \sigma > \sigma\ped{c}
@@ -628,7 +634,7 @@ the manifest.txt file, and the derived files:
 % \subparagraph{Various styles of Greek fonts} Here are some
 % examples of Greek fonts in various styles;  within the same
 % table bold and medium series fonts stay side by side, as well
-% as font coming from different families.\medskip
+% as glyphs coming from different families.\medskip
 %
 %\bgroup\begin{lrbox}{0}
 %\begin{tabular}{@{}ll@{}}
@@ -648,54 +654,54 @@ the manifest.txt file, and the derived files:
 %\section{Final remarks}
 % This package |pm-isomath| is far from perfect, and its results are
 % questionable; of course poor man solutions are just patches;
-% incomplete solutions; But the results are not so bad. It has
-% the indubitable advantage that is does not use any math group,
+% incomplete solutions; but the results are not so bad. It has
+% the indubitable advantage that is does not use any math groups,
 % therefore there is no risk to exceed the limit of 16~math groups.
 %
 % \StopEventually{}
 %
 % \section{The code}
 % This package was loosely inspired by the |ISOmath| package
-% by Günter Milde, but tacles the problem of insuffiente maximum
+% by Günter Milde, but tackles the problem of insufficient maximum
 % number of math font groups so as to avoid any problem with such
-% groups, and therfore all the caveats in Milde's package. That
-% package is much more comfortable to use then this one; but
-% it is subject to a number of conditions the, depending on the
+% group limitation, and therefore all the caveats in Milde's package.
+% That package is much more comfortable to use then this one; but
+% it is subject to a number of conditions that, depending on the
 % user environment, may even result in a complete failure. This
-% package avoids problema with math font groups because it does
+% package avoids problems with math font groups because it does
 % not use any, but it is not so comfortable to use because often
 % the user has to specify optional settings.
 %
-%The preliminary lines have been already defined; therefore we
+% The preliminary lines have been already defined; therefore we
 % start with real code.
 %
-%The trick of this package is that all fonts different from the
-% four or six (including the AMS symbol fonts) are textual fonts
+% The trick of this package is that all fonts different from the
+% four or six ones (including the AMS symbol fonts) are textual fonts
 % used in math typesetting through the intermediate action of
 % the |\text| command defined by the |amsmath| package.
 % Therefore we start by verifying if packages |amsmath|,
-% |alphabeta| and |xparse| have already been loaded by in the
-% preamble document; this implies a weak loading order, that is this
+% |alphabeta| and |xparse| have already been loaded in the document
+% preamble; this implies a weak loading order, that is this
 % package must be loaded after all the above packages are loaded;
-% in facts of such packages are not loaded, they are by this
-% package, and they are loaded without options. The package
+% in facts if such packages are not loaded, they get loaded by this
+% one, but without any option. The package
 % loading mechanism assures avoiding conflicts if packages are
 % loaded without options; this is why if one of the three packages
 % is loaded after this one but with some option specified an
 % ``Option clash"" error flag is raised; this is where the
-% ``weak'' loading error becomes an very ``strong'' one.
+% ``weak'' loading error becomes a very ``strong'' one.
  
 %\iffalse
 %<*style>
 %\fi
 %    \begin{macrocode}
-% The we verify if the document is being typeset with \pdfLaTeX;
-% it it is not; and error flag is raised and reading of this
+% Then we verify if the document is being typeset with \pdfLaTeX;
+% if it is not, an error flag is raised and reading of this
 % package is immediately interrupted. For this purpose we need
 % an engine-detecting package, and we generally use the |iftex| one.
 \@ifpackageloaded{iftex}{}{\RequirePackage{iftex}}
 \unless\ifPDFTeX
-    \PackageError{ISOrules4pdfLaTeX}{%
+    \PackageError{pm-isomath}{%
        ******************************************\MessageBreak
        This package should be used only when     \MessageBreak
        typesetting with pdfLaTeX.                \MessageBreak
@@ -709,7 +715,7 @@ the manifest.txt file, and the derived files:
     }
 \expandafeter\@firstoftwo
 \else
-    \PackageInfo{ISOrules4pdfLaTeX}{%
+    \PackageInfo{pm-isomath}{%
        ******************************************\MessageBreak
        Typesetting this document with pdfLaTeX!  \MessageBreak
        ******************************************\MessageBreak
@@ -719,14 +725,14 @@ the manifest.txt file, and the derived files:
 {\endinput}{\relax}
 %    \end{macrocode}
 % Actually this package accepts an option: |engineer|. This
-% option is for deciding if the imaginary uit should be
+% option is for deciding if the imaginary unit should be
 % defined as `i' or `j'. As we have remarked in the previous
 % documentation, engineers, especially those who deal with
-% electricity and electrical quantities, but also electronics
+% electricity and electrical quantities, but also electronics, control
 % and telecommunications engineers, use only `j'; all these
 % varieties of engineers could not do anything in their profession
 % if they don't use complex  numbers and quantities (the latter
-% called phasors). possible they are the applied scientists
+% called phasors). Possibly they are the applied scientists
 % who use complex numbers more than any other scientist.
 % This option has not been used to prepare this documented \TeX\ file.
 %    \begin{macrocode}
@@ -740,12 +746,12 @@ the manifest.txt file, and the derived files:
 \@ifpackageloaded{etoolbox}{}{\RequirePackage{etoolbox}}
 \@ifpackageloaded{xparse}{}{\RequirePackage{xparse}}
 %    \end{macrocode}
-% Now we have almost alla software instruments available. We
+% Now we have almost all software instruments available. We
 % define a macro to switch the definitions of certain math
 % Greek symbols; some of these are defined in the \LaTeX\ 
 % kernel: the lowercase Greek variant letters; some others
 % are defined in the |amsmath| package: the uppercase slanted
-% greek letters. all these variant lettere have a name identical
+% greek letters. All these variant letters have a name identical
 % to the regular ones but prefixed with the string |var|;
 % example |\epsilon| and |\varepsilon|, |\Omega| and |\varOmega|.
 % We switch the control sequence definitions between the |var|-less
@@ -784,30 +790,30 @@ the manifest.txt file, and the derived files:
 % The next line defines the default family, series and shape
 % to be used in the macros that follow; as it can be seen
 % the default family is the Latin Modern regular (or roman);
-% the series i medium and the shape is normal (or upright).
+% the series is medium and the shape is normal (or upright).
 % The codes used are the same used in the font description
-% files with extension |.fd|. their name if obtained by merging
+% files with extension |.fd|. Their name is obtained by merging
 % the encoding name with the family name; Therefore the default
-% font description  file for Latin Characters is |t1lmr.fd|,
+% font description file for Latin characters is |t1lmr.fd|,
 % while the one for Greek characters is |lgrlmr.fd|; these
-% files define the series the contains that are identified
+% files define the series they contain and that are identified
 % with codes such as |m| (medium); |bx| (bold extended);
 % |b| (bold). Other fonts, with different series may have
 % also other codes. For each series the |.fd| defines the
 % codes for shapes, and for every valid combination of
-% series, shape and sizes it defines the specific font file
+% series, shape and size it defines the specific font file
 % to use. 
 
 % We should not care for the font names, but in order to use
 % different font families, series, and shapes the user should
 % know their codes. this is generally a difficult task, but
-% not impossible; is ``suffices'' to open the packages that
-% allow to use the desired fonts, read the code and fin out
-% the names of the |.fd| files; then search this file on the
+% not impossible; it ``suffices'' to open the packages that
+% allow to use the desired fonts, read the code and find out
+% the names of the |.fd| files; then search these files on the
 % trees of the \TeX\ system, and eventually find out the
 % codes for the available series and shapes.
 % 
-% for the Latin and Greek |.fd| file we havethe series and
+% for the Latin and Greek |.fd| file we have the series and
 % shapes shown in table~\ref{tab:lmr-series-shapes}.
 %
 %\begin{table}[!tb]\centering
@@ -827,48 +833,41 @@ the manifest.txt file, and the derived files:
 %       &      & upright italics &  ui  & upright italics& ui  \\
 %       &      & small caps      & sc   & small caps    & sc   \\
 %\midrule
-% bold  &   b  & 				 &		& lipsian		& li   \\
-%		&	   & normal			 & n	&				&      \\
-%		%      & slanted		 & sl	&				&	   \\
+% bold  &   b  & 				         &		& lipsian		& li   \\
+%		    &	     & normal			     & n	&				    &      \\
+%		    &      & slanted		     & sl	&				    &	   \\
 %\midrule
-% bold extended&bx& normal       & n    & normal        & n    \\
-%       &      & italics         & it   & italics		& it   \\
-%		&	   & slanted         & sl   & slanted       & sl   \\
-%       &      &				 &		& lipsian       & li   \\
-%		%	   &				 &		& serif         & rs   \\
-%		%	   &				 &		& serif oblique & rs   \\
-%		&	   &				 %      & upright italics& ui  \\
-%		&	   &				 &		& small caps	& sc   \\
+% bold extended& bx & normal  & n  & normal          & n    \\
+%              &    & italics & it & italics		     & it   \\
+%		           &	  & slanted & sl & slanted         & sl   \\
+%              &    &				  &		 & lipsian         & li   \\
+%		           &	  &				  &		 & serif           & rs   \\
+%		           &	  &				  &		 & serif oblique   & rs   \\
+%		           &	  &				  &    & upright italics & ui   \\
+%		           &	  &				  &		 & small caps		   & sc   \\
 %\bottomrule
 %\end{tabular}
 %\caption{Seres and shapes available with the Latin Modern regular family with Latin and Greek fonts}
 %\label{tab:lmr-series-shapes}
 %\end{table}
 %
-%
-%
-%
-%%%%%% Queste sono le impostazioni di default per la famiglia,
-%%%%%% la serie e la forma:
 %    \begin{macrocode}
 \def\ISOfam{lmr}\def\ISOser{m}\def\ISOsha{n}
 %    \end{macrocode}
 %
-% As explained in the initial documentation all fonts changing
+% As explained in the initial documentation all font changing
 % commands are constructed in such a way as to have a default
-% family, series and shape common  to both Latin and Greek fonts;
-% therefore with thre optional arguments that the user can
+% family, series and shape common to both Latin and Greek fonts;
+% therefore with three optional arguments that the user can
 % specify with different delimiters but respecting their order,
 % the user can get eight different choice combinations that
-% allow the selection of an almost limited less number of
-% different looks.
+% allow the selection of a large number of different looks.
 %
-% We now define the mains macros and service macros that allow
-% such font selection; We have ti create similar macros that
-% mostly differ in the choice of the encoding for Latin or
-%  for Greek letters.
+% We now define the main and service macros that allow
+% such font selection; we have to create similar macros that
+% mostly differ in the encoding choice for Latin or Greek letters.
 %
-% The user macros are defined by meanso of the defining commands
+% The user macros are defined by means of the defining commands
 % provided by the |xparse| package, while the service macros use
 % normal \LaTeX\ commands. The user commands follow this special
 % syntax:
@@ -877,11 +876,12 @@ the manifest.txt file, and the derived files:
 %\cs{MathGreek}\marg{Greek letter}\marg{family}\oarg{series}\parg{shape}
 %\end{ttsintassi}
 % where in both cases the last three arguments are differently
-% delimited values, even the first one of the three, in spite
-% of being delimited by curly braces. In both cases the only
+% delimited optional values, even the first one of the three, in
+% spite of being delimited by curly braces. In both cases the only
 % mandatory argument is the Latin or Greek letter; the latter
-% one my be specified by the macros |\alpha|, |\beta|,\dots,
-% |\Omega|, the same ones that are normally used in math.
+% one may be specified by the macros |\alpha|, |\beta|,\dots,
+% |\Omega|, the same ones that are normally used in math (although
+% they are going to be used in textmode).
 %    \begin{macrocode}
 \NewDocumentCommand\MathLatin{m gO{m}D(){it}}{\bgroup
 \edef\y{\IfNoValueTF{#2}{\ISOfam}{#2}}%
@@ -904,10 +904,10 @@ the manifest.txt file, and the derived files:
 
 %    \end{macrocode}
 % We now define the macros for all lowercase Greek letters
-% and several Uppercase ones (even some that are identical
-% to some Latin Letters) that should save several keystrokes
-% when entering Greek letters in the source file. The shorter
-% the code to type in, the smaller the the number of typos.
+% and several uppercase ones (even some that are identical
+% to some Latin letters) that should save several keystrokes
+% when entering such letters in the source file. The shorter
+% the code to type in, the smaller the the number of potential typos.
 %    \begin{macrocode}
 \newcommand\ISOalpha{\MathGreek{\alpha}}
 \newcommand\ISObeta{\MathGreek{\beta}}
@@ -986,23 +986,23 @@ the manifest.txt file, and the derived files:
 %    \end{macrocode}
 %
 % We now define some macros for setting some elements in the
-% proper fonts; the ideaa is the same as that for vectors,
+% proper fonts; the idea is the same as that for vectors,
 % matrices and tensors, except that these macros produce
 % directly the desired symbol without using arguments, if
 % possible.
 %
 % The imaginary unit is subject to the state of the |engineer|
 % switch, set with the proper option on calling the package.
-% If such option has been specifies in calling this package,
+% If such option has been specified in calling this package,
 % the |\iu| command is let to |\junit|, otherwise it's let
 % to |\iunit|. In spite of this option driven aliases, both
-% commands |\iunit| and |\junit| are stille available to the
+% commands |\iunit| and |\junit| are still available to the
 % user.
 %
 % The Napier number `e' is defined in roman type, but as an
 % operator; this number is not an operator in the mathematical
-% sense, but it is most often uses as the base of an exponential;
-% therefore such mathematica ``atom'' must be treated as an
+% sense, but it is most often used as the base of an exponential;
+% therefore such math ``atom'' must be treated as an
 % operator as well as when the official operator macro |\exp|
 % is used.
 %
@@ -1020,10 +1020,10 @@ the manifest.txt file, and the derived files:
 % a special treatment; a macro |\diff| for the differential
 % symbol uses an empty`operator' and a negative shift to typeset
 % an upright letter `d'  with an operator spacing on its left,
-% so that proper spacing is used in math typesetting; Notice
+% so that proper spacing is used in math typesetting; notice
 % that the given definition does not perform as the direct
 % use of a thin math space before the upright `d', because
-% spacing bteween math atoms depends on their category, while
+% spacing between math atoms depends on their category, while
 % the thin space |\,| is absolute and does not change depending
 % on the preceding math atom.
 %
@@ -1081,7 +1081,7 @@ the manifest.txt file, and the derived files:
 \unless\ifmmode\expandafter\@firstoftwo
 \else\expandafter\@secondoftwo\fi}
 %
-\AfterEndPreamble{\let\ped\undefined\let\ap\endefined
+\AfterEndPreamble{\let\ped\undefined\let\ap\undefined
 \DeclareRobustCommand*\ped[1]{%
 \textormath{\textsubscript{#1}}{_{\mathrm{#1}}}}%
 %
-- 
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