actuarialsymbol (13jun19)

git-svn-id: svn://tug.org/texlive/trunk@51371 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 223 insertions, 179 deletions

diff --git a/Master/texmf-dist/source/latex/actuarialsymbol/actuarialsymbol.dtx b/Master/texmf-dist/source/latex/actuarialsymbol/actuarialsymbol.dtx
index b19549c144f..7677572f860 100644
--- a/Master/texmf-dist/source/latex/actuarialsymbol/actuarialsymbol.dtx
+++ b/Master/texmf-dist/source/latex/actuarialsymbol/actuarialsymbol.dtx
@@ -1,6 +1,6 @@
 % \iffalse meta-comment
 %
-% Copyright (C) 2017 David Beauchemin, Vincent Goulet
+% Copyright (C) 2019 David Beauchemin, Vincent Goulet
 %
 % This file may be distributed and/or modified under the conditions
 % of the LaTeX Project Public License, either version 1.3c of this
@@ -17,7 +17,7 @@
 % The Current Maintainer of this work is Vincent Goulet
 % <vincent.goulet@act.ulaval.ca>.
 %
-% This work consists of the files actuarialsymbol.dtx and the derived
+% This work consists of actuarialsymbol.dtx and the derived
 % files.
 %
 % \fi
@@ -27,7 +27,7 @@
           \ProvidesFile{actuarialsymbol.dtx}
 %</dtx>
 %<package>\NeedsTeXFormat{LaTeX2e}[2009/09/24]
-%<package>\ProvidesPackage{actuarialsymbol}[2017/06/14 v1.0a Actuarial symbols]
+%<package>\ProvidesPackage{actuarialsymbol}[2019/06/13 v1.1 Actuarial symbols]
 %<*batchfile>
 \begingroup
 \input docstrip.tex
@@ -38,7 +38,7 @@
 
 This is a generated file.
 
-Copyright (C) 2017 David Beauchemin, Vincent Goulet
+Copyright (C) 2019 David Beauchemin, Vincent Goulet
 
 This file may be distributed and/or modified under the conditions
 of the LaTeX Project Public License, either version 1.3c of this
@@ -87,7 +87,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
   \definecolor{link}{rgb}{0,0.4,0.6}   % ~dvips RoyalBlue
   \definecolor{url}{rgb}{0.6,0,0}      % dark red
   \definecolor{citation}{rgb}{0,0.5,0} % dark green
-  \colorlet{shadecolor}{LightYellow1}
+  \colorlet{shadecolor}{LightYellow1}  % code background
 
   %% left aligned description list
   \usepackage{enumitem}
@@ -99,25 +99,41 @@ This work consists of actuarialsymbol.dtx and the derived files.
   \newtheorem*{rem}{Remark}
 
   %% single entry for symbol and shortcut lists
-  %% http://tex.stackexchange.com/a/128441
+  %% https://tex.stackexchange.com/a/128441
   \usepackage{xparse}
   \ExplSyntaxOn
   \NewDocumentCommand{\showcase}{v} { \tl_rescan:nn { } { $#1$ } & \texttt{#1} }
   \NewDocumentCommand{\rshowcase}{v} { \texttt{#1} & \tl_rescan:nn { } { $#1$ } }
   \ExplSyntaxOff
 
+  %% environment for displayed sample code; hybrid between
+  %% environments snugshade* and leftbar of framed.sty
+  \makeatletter
+  \newenvironment{snugshadebar}{%
+    \setlength{\topsep}{1pt}
+    \def\FrameCommand##1{\hskip\@totalleftmargin
+       \vrule width 2pt\colorbox{shadecolor}{\hspace{3pt}##1}%
+      % There is no \@totalrightmargin, so:
+      \hskip-\linewidth \hskip-\@totalleftmargin \hskip\columnwidth}%
+    \MakeFramed {\advance\hsize-\width
+      \@totalleftmargin\z@ \linewidth\hsize
+      \advance\labelsep\fboxsep
+      \@setminipage}%
+  }{\par\unskip\@minipagefalse\endMakeFramed}
+  \makeatother
+
   %% environments for demo code; 'texample' mostly lifted from
   %% documentation of amsmath
   \newenvironment{demo}{\begin{trivlist}\item}{\end{trivlist}}
   \newenvironment{texample}[1][0.5]{%
-    \noindent\begin{minipage}{#1\linewidth}\begin{snugshade*}%
-      \def\producing{\end{snugshade*}\end{minipage}\hfill\begin{minipage}{\dimexpr0.97\linewidth-#1\linewidth}%
+    \noindent\begin{minipage}{#1\linewidth}\begin{snugshadebar}%
+      \def\producing{\end{snugshadebar}\end{minipage}\hfill\begin{minipage}{\dimexpr0.97\linewidth-#1\linewidth}%
         \hbox\bgroup\kern-.2pt%
         \vbox\bgroup\parindent0pt\relax
         % The 3pt is to cancel the -\lineskip from \displ@y
         \abovedisplayskip3pt \abovedisplayshortskip\abovedisplayskip
         \belowdisplayskip0pt \belowdisplayshortskip\belowdisplayskip
-        \noindent}
+        \noindent}%
     }{%
       \par
       % Ensure that a lonely \[\] structure doesn't take up width less than
@@ -136,11 +152,16 @@ This work consists of actuarialsymbol.dtx and the derived files.
 
   %% hyperlinks
   \usepackage{hyperref}
-  \hypersetup{colorlinks, linktocpage,
-    urlcolor=url, linkcolor=link, citecolor=citation,
-    bookmarksopen, bookmarksnumbered, bookmarksdepth=subsection,
+  \hypersetup{%
     pdftitle={actuarialsymbol User Guide},
-    pdfauthor={David Beauchemin, Vincent Goulet}}
+    pdfauthor={David Beauchemin, Vincent Goulet},
+    colorlinks = true,
+    linktocpage = true,
+    urlcolor = {url},
+    linkcolor = {link},
+    citecolor = {citation},
+    pdfpagemode = {UseOutlines},
+    pdfstartview = {Fit}}
 
   %% autoref labels
   \let\subsectionautorefname\sectionautorefname
@@ -151,25 +172,29 @@ This work consists of actuarialsymbol.dtx and the derived files.
 \end{document}
 %</driver>
 % \fi
-% \CheckSum{537}
+% \CheckSum{520}
 % \changes{1.0}{2017-04-11}{Initial release.}
+% \changes{1.1}{2019-01-08}{Various improvements to the code
+%   contributed by Ruixi Zhang.}
+% \changes{1.1}{2019-06-13}{Code samples displayed in a box with a
+%   left bar.}
 %
 % \GetFileInfo{actuarialsymbol.sty}
 %
 % \title{Actuarial symbols of life contingencies \\
-%   and financial mathematics%
+%   and financial mathematics^^A
 %   \thanks{This document corresponds to
 %   \pkg{actuarialsymbol}~\fileversion, dated~\filedate.}}
 % \author{David Beauchemin \\
 %   \url{david.beauchemin.5@ulaval.ca}
 %   \and
-%   Vincent Goulet\thanks{%
+%   Vincent Goulet\thanks{^^A
 %     École d'actuariat, Université Laval} \\
 %   \url{vincent.goulet@act.ulaval.ca}}
 % \maketitle
 %
 % \begin{abstract}
-%   Package \pkg{actuarialsymbol} provides facilities to compose
+%   The package \pkg{actuarialsymbol} provides facilities to compose
 %   actuarial symbols of life contingencies and financial mathematics
 %   characterized by subscripts and superscripts on both sides of a
 %   principal symbol. The package also features commands to easily and
@@ -211,8 +236,8 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % the right. Schematically, we thus have:
 % \begin{equation}
 %   \label{schema1}
-%   \actsymb[\fbox{\scriptsize I}\!\;][\fbox{\scriptsize II}\!\;]%
-%      {\framebox[5ex]{$S$}}{\,\fbox{\scriptsize III}}%
+%   \actsymb[\fbox{\scriptsize I}\!\;][\fbox{\scriptsize II}\!\;]^^A
+%      {\framebox[5ex]{$S$}}{\,\fbox{\scriptsize III}}^^A
 %      [\,\fbox{\scriptsize IV}]
 % \end{equation}
 %
@@ -221,35 +246,35 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % a circle ($\mathring{e}$). When the principal symbol consists of two
 % letters, they are grouped between parentheses, as in $\IA$ or
 % $\DA*$. Most commonly, there are alphanumeric statuses in the
-% lower-right position \fbox{\small III}. Numerals can be placed above
+% lower-right position \fbox{\small III}\,. Numerals can be placed above
 % or below the individual statuses to show the order of failure; we
 % will refer to these numerals as \emph{precedence numbers}. Otherwise,
-% auxiliary symbols appear lower-left \fbox{\small I}, upper-left
-% \fbox{\small II} and upper-right \fbox{\small IV}, in that order of
+% auxiliary symbols appear lower-left \fbox{\small I}\,, upper-left
+% \fbox{\small II}\, and upper-right \fbox{\small IV}\,, in that order of
 % frequency.
 %
-% Principle symbols for benefit premiums, reserves and amount of
-% reduced paid-up insurance, $P$, $V$ and $W$, are combined with
+% Symbols for benefit premiums ($P$), reserves ($V$) and amount of
+% reduced paid-up insurance ($W$), are combined with
 % benefit symbols unless the benefit is a level unit insurance payable
 % at the end of the year of death. In such cases, we have the
 % following symbol structure (replace $P$ by $V$ or $W$ as needed):
 % \begin{equation}
 %   \label{schema2}
-%   \actsymb[\fbox{\scriptsize I}\!\;][\fbox{\scriptsize II}\!\;]%
-%      {\framebox[5ex]{$P$}}{}[\,\fbox{\scriptsize IV}]%
-%   \bigl(\actsymb{\framebox[5ex]{$S$}}{\,\fbox{\scriptsize III}}\bigr)%
+%   \actsymb[\fbox{\scriptsize I}\!\;][\fbox{\scriptsize II}\!\;]^^A
+%      {\framebox[5ex]{$P$}}{}[\,\fbox{\scriptsize IV}]^^A
+%   \bigl(\actsymb{\framebox[5ex]{$S$}}{\,\fbox{\scriptsize III}}\bigr)
 % \end{equation}
 %
 % Perhaps the most commonly used auxiliary symbol not readily
 % available in {\LaTeX} is the ``angle'' denoting a duration $n$, as
-% in $\angln$. Package \pkg{actuarialangle} \citep{actuarialangle}
+% in $\angln$. The package \pkg{actuarialangle} \citep{actuarialangle}
 % provides commands to create this symbol, as well as an overhead
 % angle bracket\footnote{Starting with version 2.0 dated 2017/04/10.}
-% (or ``roof'') used to emphasize joint status when ambiguity is
+% (or ``roof'') used to emphasize the joint status when ambiguity is
 % possible: $\group{xy}$. This package is imported at load time by
 % \pkg{actuarialsymbol}.
 %
-% Package \pkg{actuarialsymbol} provides a generic command to position
+% The package \pkg{actuarialsymbol} provides a generic command to position
 % all subscripts and superscripts easily and consistently around a
 % principal symbol; a command to create two-letter symbols; and two
 % commands to position precedence numbers above and below statuses.
@@ -286,11 +311,11 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %     \cmd{\actsymb}\oarg{ll}\oarg{ul}\marg{symbol}\marg{lr}\oarg{ur}
 %   \end{quote}
 %   Above, \meta{ll} identifies the auxiliary symbol in the lower left
-%   subscript position \fbox{\small I} (following the notation in the
+%   subscript position \fbox{\small I}\, (following the notation in the
 %   schematic representation \eqref{schema1}); \meta{ul} is the upper
-%   left superscript \fbox{\small II}; \meta{symbol} is the principal
+%   left superscript \fbox{\small II}\,; \meta{symbol} is the principal
 %   symbol $S$; \meta{lr} is the lower right subscript \fbox{\small
-%   III}; \meta{ur} is the upper right superscript $\fbox{\small IV}$.
+%   III}\,; \meta{ur} is the upper right superscript \fbox{\small IV}\,.
 %   The principal symbol and the right subscript are required, the
 %   other arguments are optional.
 %   \begin{demo}
@@ -316,13 +341,13 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %     \end{texample}
 %   \end{demo}
 %
-%   The command actually admits one more optional argument to compose
+%   The command actually supports one more optional argument, for composing
 %   symbols for premiums, reserves and paid-up insurance. The extended
 %   command
 %   \begin{quote}
-%     \cmd{\actsymb}\oarg{ll}\oarg{ul}\oarg{principle}\marg{symbol}\marg{lr}\oarg{ur}
+%     \cmd{\actsymb}\oarg{ll}\oarg{ul}\oarg{P}\marg{symbol}\marg{lr}\oarg{ur}
 %   \end{quote}
-%   puts symbol \meta{principle} outside the parentheses in the
+%   puts symbol \meta{P} outside the parentheses in the
 %   schematic representation \eqref{schema2}.
 %   \begin{demo}
 %     \begin{texample}[0.7]
@@ -364,9 +389,9 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %       $\actsymb{A}{x} \quad \actsymb{A}{x}[2]$
 %     \end{texample}
 %   \end{demo}
-%   Furthermore, the package also ensures that the left and right
+%   Furthermore, the package ensures that the left and right
 %   subscripts, when both present, are at the same level, something
-%   popular ad~hoc constructions do not provide.
+%   common ad~hoc constructions do not provide.
 %   \begin{demo}
 %     \begin{texample}[0.7]
 %       |{}_tA_x \quad {}_tA_x^2|
@@ -380,9 +405,9 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %     \end{texample}
 %   \end{demo}
 %   In symbols for premiums, reserves and paid-up insurance,
-%   subscripts and superscripts are aligned only around the principle
-%   symbol. Authors who would prefer a uniform subscript position
-%   \emph{throughout their document} should load package
+%   subscripts and superscripts are aligned only around
+%   symbol \meta{P}. Authors who would prefer a uniform subscript position
+%   \emph{throughout their document} can load the package
 %   \pkg{subdepth} \citep{subdepth}.
 % \end{rem}
 %
@@ -397,7 +422,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %     \cmd{\twoletsymb}\oarg{length}\marg{symbol\_1}\marg{symbol\_2}
 %   \end{quote}
 %   to group \meta{symbol\_1} and \meta{symbol\_2} between parentheses
-%   with kerning\footnote{Spacing adjustment between the characters}
+%   with kerning\footnote{Spacing adjustment between the characters.}
 %   reduced by length \cmd{\twoletkern} (see below). One can also
 %   reduce spacing by \meta{length} for a specific symbol.
 %   \begin{demo}
@@ -427,7 +452,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \begin{DescribeMacro}{\twoletkern}
 %   The standard kerning between mathematical symbols defined with
 %   \cmd{\twoletsymb} is \emph{reduced} by the length
-%   \cmd{\twoletkern}, by default \the\twoletkern. This value can be
+%   \cmd{\twoletkern}, by default 0.1em. This value can be
 %   changed as usual using \cmd{\setlength}.
 % \end{DescribeMacro}
 %
@@ -437,18 +462,17 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \begin{DescribeMacro}{\nthtop}
 % \begin{DescribeMacro}{\nthtop*}
 %   Precedence numbers appear above or below individual statuses in
-%   the right subscript \fbox{\small III} of a symbol. Commands
+%   the right subscript \fbox{\small III}\, of a symbol. The commands
 %   \begin{quote}
 %     \cmd{\nthtop}\oarg{length}\marg{number}\marg{status} \\
 %     \cmd{\nthtop*}\oarg{length}\marg{number}\marg{status}
 %   \end{quote}
 %   put a precedence \meta{number} above a \meta{status}, smashed so
-%   that the apparent height of the status is its normal height. This is
-%   normally used in the right subscript \fbox{\small III} of a symbol. With
+%   that the apparent height of the status is its normal height. With
 %   \cmd{\nthtop}, the spacing between the precedence number and the
 %   status is a constant \cmd{\nthtopsep} (see below). This can result
 %   in precedence numbers placed at different heights if one status
-%   contains an horizontal rule.
+%   contains a horizontal rule.
 %   \begin{demo}
 %     \begin{texample}[0.85]
 %       |\actsymb{A}{\nthtop{1}{x}:\angln}|
@@ -528,7 +552,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %
 % \begin{rem}
 %   The fact that top precedence numbers have zero height means they
-%   will clash with a right superscript \fbox{\small IV}:
+%   will clash with a right superscript \fbox{\small IV}\,:
 %   \begin{demo}
 %     \begin{texample}[0.7]
 %       |\actsymb{A}{\nthtop{1}{x}:\angln}[(m)]|
@@ -557,17 +581,17 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \begin{DescribeMacro}{\nthbottomskip}
 %   The constant spacing between a top precedence number and the status
 %   underneath when using \cmd{\nthtop} is \cmd{\nthtopsep}, by
-%   default \the\nthtopsep. The constant height of top precedence
+%   default 0.18em. The constant height of top precedence
 %   numbers when using \cmd{\nthtop*} is achieved by setting the
 %   baseline skip to \cmd{\nthtopskip}, by default
-%   \the\nthtopskip.
+%   0.64em.
 %
 %   Similarly, the constant spacing between a bottom precedence number
 %   and the status above when using \cmd{\nthbottom} is
-%   \cmd{\nthbottomsep}, by default \the\nthbottomsep, and the
+%   \cmd{\nthbottomsep}, by default 0.18em, and the
 %   constant height of bottom precedence numbers when using
 %   \cmd{\nthbottom*} is achieved by setting the baseline skip to
-%   \cmd{\nthbottomskip}, by default \the\nthbottomskip.
+%   \cmd{\nthbottomskip}, by default 0.82em.
 %
 %   These values can be changed as usual using \cmd{\setlength}.
 % \end{DescribeMacro}
@@ -629,10 +653,10 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %     \raggedright
 %     \hspace*{1em}{\footnotesize $^\dagger$ Calligraphic letters
 %     obtained using \cmd{\mathcal}. These specific versions of
-%     $\mathcal{L}$ and $\mathcal{D}$ require package \pkg{rsfso}
+%     $\mathcal{L}$ and $\mathcal{D}$ require the package \pkg{rsfso}
 %     \citep{rsfso}. Standard versions are
 %     $\text{\usefont{OMS}{zplm}{m}{n} L}$ and
-%     $\text{\usefont{OMS}{zplm}{m}{n} D}$.}
+%     $\text{\usefont{OMS}{zplm}{m}{n} D}$.\par}
 % \end{table}
 %
 % One will note that shortcuts for insurance benefits come in two
@@ -659,7 +683,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   provides a single shortcut for \meta{symbol}.
 %
 %   For example, the package defines the shortcut \cmd{\px} with the
-%   equivalent of %
+%   equivalent of ^^A
 %   ^^A below we abuse the texample environment to avoid defining
 %   ^^A another environment just for this purpose
 %   \begin{demo}
@@ -691,7 +715,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   benefits $B$ and $\bar{B}$, one would write in the preamble
 %   \begin{demo}
 %     \begin{texample}[1]
-%       |\makatletter| \\
+%       |\makeatletter| \\
 %       |\newcommand{\Bx}{\@actinssc{B}}| \\
 %       |\makeatother| \producing
 %     \end{texample}
@@ -745,12 +769,12 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   to the second set of \autoref{tab:premres} using the internal
 %   command
 %   \begin{quote}
-%     |\@actpremres|\marg{principle}
+%     |\@actpremres|\marg{P}
 %   \end{quote}
 %   It defines shortcuts for discrete (default) or continuous (|*|
 %   variant) premiums, reserves and paid-up insurance. For example,
 %   the package defines shortcuts \cmd{\premium} and \cmd{\premium*}
-%   with
+%   with the equivalent of
 %   \begin{demo}
 %     \begin{texample}[1]
 %       |\newcommand{\premium}{\@actpremres{P}}| \producing
@@ -764,7 +788,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \label{sec:shortcuts:aux}
 %
 % \autoref{tab:aux} lists shortcuts for a few common auxiliary symbols
-% used in the lower right subscript \fbox{\small III}.
+% used in the lower right subscript \fbox{\small III}\,.
 %
 % \begin{table}
 %   \centering
@@ -784,7 +808,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %       \bottomrule
 %   \end{tabular*} \\
 %   \raggedright
-%   \hspace*{1em}{\footnotesize $^\dagger$ alias for \cmd{\overline}}
+%   \hspace*{1em}{\footnotesize $^\dagger$ Alias for \cmd{\overline}.\par}
 % \end{table}
 %
 % \subsection{Symbols for varying benefit insurance and annuities}
@@ -889,7 +913,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   equivalent to \cmd{\nthtop*} and \cmd{\nthbottom*},
 %   respectively;
 % \item[\mdseries\ttfamily compactpreced] always put precedence
-%   numbers close to the corresponding status; makes \cmd{\nthtop*}
+%   numbers close to the corresponding statuses; makes \cmd{\nthtop*}
 %   and \cmd{\nthbottom*} equivalent to \cmd{\nthtop} and
 %   \cmd{\nthbottom}, respectively.
 % \end{description}
@@ -920,13 +944,12 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %
 % Calligraphic letters are typeset using \cmd{\mathcal}. The specific
 % versions of $\mathcal{L}$ and $\mathcal{D}$ that appear in this
-% table require package \pkg{rsfso} \citep{rsfso}, which is \emph{not}
+% table require the package \pkg{rsfso} \citep{rsfso}, which is \emph{not}
 % loaded by \pkg{actuarialsymbol}. Standard versions of the
 % calligraphic letters are $\text{\usefont{OMS}{zplm}{m}{n} L}$ and
 % $\text{\usefont{OMS}{zplm}{m}{n} D}$. See Table~299 of
 % \citet{comprehensive} for other options.
 %
-% %
 % \begingroup
 % \catcode`\|=12 ^^A to use | in math, disable as verbatim delimiter
 % \begin{longtable}{ll}
@@ -1361,8 +1384,8 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   \addcontentsline{toc}{section}{References}
 %   \bibitem[{A}merican~{M}athematical {S}ociety(2002)]{amsmath}
 %     {A}merican~{M}athematical {S}ociety.
-%     \newblock \emph{User’s Guide for the amsmath Package}, 2002.
-%     \newblock URL \url{http://www.ctan.org/pkg/amsmath/}.
+%     \newblock \emph{User's Guide for the amsmath Package}, 2002.
+%     \newblock URL \url{https://www.ctan.org/pkg/amsmath/}.
 %
 %   \bibitem[Bowers et~al.(1997)Bowers, Gerber, Hickman, Jones, and
 %     Nesbitt]{Bowers:2e:1997}
@@ -1375,27 +1398,27 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %     V. Goulet.
 %     \newblock \emph{Actuarial angle symbol for life contingencies and financial
 %       mathematics}, 2017.
-%     \newblock URL \url{http://www.ctan.org/pkg/actuarialangle/}.
+%     \newblock URL \url{https://www.ctan.org/pkg/actuarialangle/}.
 %
 %   \bibitem[Høgholm and Madsen(2015)]{mathtools}
 %     M. Høgholm and L. Madsen.
 %     \newblock \emph{The mathtools package}, 2015.
-%     \newblock URL \url{http://www.ctan.org/pkg/mathtools/}.
+%     \newblock URL \url{https://www.ctan.org/pkg/mathtools/}.
 %
 %   \bibitem[Pakin(2015)]{comprehensive}
 %     S. Pakin.
 %     \newblock \emph{The Comprehensive {\LaTeX} Symbol List}, 2015.
-%     \newblock URL \url{http://www.ctan.org/pkg/comprehensive/}.
+%     \newblock URL \url{https://www.ctan.org/pkg/comprehensive/}.
 %
 %   \bibitem[Robertson(2007)]{subdepth}
 %     W. Robertson.
 %     \newblock \emph{Unify subscript depths}, 2007.
-%     \newblock URL \url{http://www.ctan.org/pkg/subdepth/}.
+%     \newblock URL \url{https://www.ctan.org/pkg/subdepth/}.
 %
 %   \bibitem[Sharpe(2015)]{rsfso}
 %     M. Sharpe.
 %     \newblock \emph{An acute script font based on {rsfs}}, 2015.
-%     \newblock URL \url{http://www.ctan.org/pkg/rsfso/}.
+%     \newblock URL \url{https://www.ctan.org/pkg/rsfso/}.
 %
 %   \bibitem[Trivedi(2004)]{Trivedi:lifecon:2004}
 %     E. Trivedi.
@@ -1408,7 +1431,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %     \newblock In Jozef Teugels and Bj{\o}rn Sundt, editors, \emph{Encyclopedia of
 %     Actuarial Science}. Wiley, 2004.
 %     \newblock ISBN 978-0-47001250-5.
-%     \newblock URL \url{http://onlinelibrary.wiley.com/book/10.1002/9780470012505}.
+%     \newblock URL \url{https://onlinelibrary.wiley.com/book/10.1002/9780470012505}.
 %   \end{thebibliography}
 %   \PrintChanges
 % }
@@ -1426,7 +1449,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \subsection{Required packages}
 % \label{sec:implementation:packages}
 %
-% \begin{macro}{RequirePackage}
+% \begin{macro}{\RequirePackage}
 %   The package depends on packages \pkg{amsmath} \citep{amsmath} and
 %   \pkg{actuarialangle} \citep{actuarialangle}.
 %    \begin{macrocode}
@@ -1439,7 +1462,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \label{sec:implementation:options}
 %
 % \begin{macro}{\ifacts@alignpreced}
-% \begin{macro}{\ifacts@acompactpreced}
+% \begin{macro}{\ifacts@compactpreced}
 %   We define two flags to keep track of the type of alignment for
 %   precedence numbers. Both are false by default.
 %    \begin{macrocode}
@@ -1469,7 +1492,7 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \subsubsection{User level and parsing commands}
 % \label{sec:implementation:actsymb:user}
 %
-% \begin{macro}{actsymb}
+% \begin{macro}{\actsymb}
 %   We first define the user level command.
 %    \begin{macrocode}
 \DeclareRobustCommand{\actsymb}{\acts@actsymb}
@@ -1482,22 +1505,23 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   With its unusual syntax, \cmd{\actsymb} requires four parsing
 %   macros to pass the arguments to the actual workhorse
 %   \cmd{\@actsymbol}.
+%   \changes{1.1}{2019-01-08}{Use \pkg{amsmath}'s \cmd{\new@ifnextchar}.}
 %    \begin{macrocode}
-\newcommand\acts@actsymb{%
-  \@ifnextchar[{\acts@@actsymb}%
-               {\acts@@actsymb[]}}
-\newcommand\acts@@actsymb{}
+\newcommand*\acts@actsymb{%
+  \new@ifnextchar[{\acts@@actsymb}%
+                  {\acts@@actsymb[]}}
+\newcommand*\acts@@actsymb{}
 \def\acts@@actsymb[#1]{%
-  \@ifnextchar[{\acts@@@actsymb[#1]}%
-               {\acts@@@actsymb[#1][]}}
-\newcommand\acts@@@actsymb{}
+  \new@ifnextchar[{\acts@@@actsymb[#1]}%
+                  {\acts@@@actsymb[#1][]}}
+\newcommand*\acts@@@actsymb{}
 \def\acts@@@actsymb[#1][#2]{%
-  \@ifnextchar[{\acts@@@@actsymb[#1][#2]}%
-               {\acts@@@@actsymb[#1][#2][]}}
-\newcommand\acts@@@@actsymb{}
+  \new@ifnextchar[{\acts@@@@actsymb[#1][#2]}%
+                  {\acts@@@@actsymb[#1][#2][]}}
+\newcommand*\acts@@@@actsymb{}
 \def\acts@@@@actsymb[#1][#2][#3]#4#5{%
-  \@ifnextchar[{\@actsymbol[#1][#2][#3]{#4}{#5}}%
-               {\@actsymbol[#1][#2][#3]{#4}{#5}[]}}
+  \new@ifnextchar[{\@actsymbol[#1][#2][#3]{#4}{#5}}%
+                  {\@actsymbol[#1][#2][#3]{#4}{#5}[]}}
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -1514,65 +1538,67 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   six arguments, using the notation from of the schematics
 %   representations \eqref{schema1} and \eqref{schema2}:
 %   \begin{enumerate}[nosep]
-%   \item lower left subscript \fbox{\small I}; may be empty;
-%   \item upper left superscript \fbox{\small II}; may be empty;
-%   \item principle symbol $P$; when empty a standard symbol is
+%   \item lower left subscript \fbox{\small I}\,; may be empty;
+%   \item upper left superscript \fbox{\small II}\,; may be empty;
+%   \item symbol $P$; when empty a standard symbol is
 %     typeset;
 %   \item principal symbol $S$; assumed present;
-%   \item lower right subscript \fbox{\small III}; assumed present;
-%   \item upper right superscript \fbox{\small IV}; may be empty.
+%   \item lower right subscript \fbox{\small III}\,; assumed present;
+%   \item upper right superscript \fbox{\small IV}\,; may be empty.
 %   \end{enumerate}
 %   The definition below is heavily inspired by the code of
-%   \cmd{\prescript} from package \pkg{mathtools} \citep{mathtools}
+%   \cmd{\prescript} from the package \pkg{mathtools} \citep{mathtools}
 %   which, as reported by the author, is itself based on a posting to
 %   |comp.text.tex| by Michael J.~Downes. Some of the comments below
 %   are still his.
 %    \begin{macrocode}
-\def\@actsymbol[#1][#2][#3]#4#5[#6]{
+\newcommand*\@actsymbol{}
+\def\@actsymbol[#1][#2][#3]#4#5[#6]{%
 %    \end{macrocode}
-%   We put the principle symbol and all subscripts and superscript into
-%   horizontal boxes using \cmd{\@mathmeasure} of package \pkg{amsmath}.
+%   We put symbol $P$ and all subscripts and superscript into
+%   horizontal boxes using \cmd{\@mathmeasure} of the package \pkg{amsmath}.
+%   \changes{1.1}{2019-01-08}{Use local box registers.}
 %    \begin{macrocode}
-  \@mathmeasure\z@\displaystyle{#3}
-  \@mathmeasure\@ne\scriptstyle{#1}
-  \@mathmeasure\tw@\scriptstyle{#2}
-  \@mathmeasure\thr@@\scriptstyle{#5}
-  \@mathmeasure4\scriptstyle{#6}
+  \@mathmeasure\z@\displaystyle{#3}%
+  \@mathmeasure\tw@\scriptstyle{#1}%
+  \@mathmeasure4\scriptstyle{#2}%
+  \@mathmeasure6\scriptstyle{#5}%
+  \@mathmeasure8\scriptstyle{#6}%
 %    \end{macrocode}
 %   Do not let a preceding mathord symbol approach without any
 %   intervening space.
 %    \begin{macrocode}
-  \mathord{}
+  \mathord{}%
 %    \end{macrocode}
 %   Right align the left subscript and superscript (if there is a
 %   superscript) by adjusting the width of their horizontal boxes.
 %    \begin{macrocode}
-  \ifdim \wd\tw@>\z@ \ifdim \wd\tw@>\wd\@ne
-    \setbox\@ne\hbox to\wd\tw@{\hfil\unhbox\@ne}
+  \ifdim \wd4>\z@ \ifdim \wd4>\wd\tw@
+    \setbox\tw@\hbox to\wd4{\hfil\unhbox\tw@}%
   \else
-    \setbox\tw@\hbox to\wd\@ne{\hfil\unhbox\tw@}
+    \setbox4\hbox to\wd\tw@{\hfil\unhbox4}%
   \fi\fi
 %    \end{macrocode}
 %   Bottom align the left and right subscripts by making their heights
 %   equal.
 %    \begin{macrocode}
-  \ifdim \ht\@ne>\ht\thr@@
-    \ht\thr@@=\ht\@ne
+  \ifdim \ht\tw@>\ht6
+    \ht6=\ht\tw@
   \else
-    \ht\@ne=\ht\thr@@
+    \ht\tw@=\ht6%
   \fi
 %    \end{macrocode}
 %   Actual symbol construction. First the case where there is at least
 %   one superscript (the nested conditionals emulate an OR condition).
 %    \begin{macrocode}
-  \ifnum\ifdim \wd\tw@>\z@ 1\else\ifdim \wd4>\z@ 1\else 0\fi\fi
-    =1
+  \ifnum\ifdim \wd4>\z@ 1\else\ifdim \wd8>\z@ 1\else 0\fi\fi
+    =1 %
 %    \end{macrocode}
 %   To ensure equal spacing with the subscripts on both sides of the
 %   principal symbol, make the depths of the left and right
 %   supercripts equal.
 %    \begin{macrocode}
-    \ifdim \dp\tw@>\dp4 \dp4=\dp\tw@\else \dp\tw@=\dp4\fi
+    \ifdim \dp4>\dp8 \dp8=\dp4\else \dp4=\dp8\fi
 %    \end{macrocode}
 %   Typesetting of the left subscript and superscript. Use
 %   \cmd{\mathopen} to suppress space between those and the principal
@@ -1583,18 +1609,19 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %     the discussion} on StackExchange for details.)
 %   \changes{1.0a}{2017-06-14}{Fix left subscript positioning with xetex.}
 %    \begin{macrocode}
-    \mathopen{\vphantom{\textstyle #4}^{\box\tw@}\sb{\box\@ne}}%
+    \mathopen{\vphantom{\textstyle #4}\sp{\box4}\sb{\box\tw@}}%
 %    \end{macrocode}
 %   Typesetting of the principal symbol and the right subscript and
 %   superscript. The principal symbol is either a principal symbol alone
-%   or a principle symbol and a benefit symbol between parentheses. In
+%   or a premium (or reserve, or paid-up insurance) symbol and a benefit symbol
+%   between parentheses. In
 %   the latter case, we make sure to align the subscripts and
-%   superscripts only around the principle symbol.
+%   superscripts only around the premium symbol.
 %    \begin{macrocode}
     \ifdim\wd\z@=\z@
-      #4^{\box4}\sb{\box\thr@@}%
+      #4\sp{\box8}\sb{\box6}%
     \else
-      #3^{\box4}\sb{\vphantom{\copy\thr@@}}(#4\sb{\box\thr@@})%
+      #3\sp{\box8}\sb{\vphantom{\copy6}}(#4\sb{\box6})%
     \fi
   \else
 %    \end{macrocode}
@@ -1602,11 +1629,11 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   way, {\TeX}'s default placement of subscripts and superscripts is
 %   maintained.
 %    \begin{macrocode}
-    \mathopen{\vphantom{\textstyle #4}\sb{\box\@ne}}%
+    \mathopen{\vphantom{\textstyle #4}\sb{\box\tw@}}%
     \ifdim\wd\z@=\z@
-      #4\sb{\box\thr@@}%
+      #4\sb{\box6}%
     \else
-      #3(#4\sb{\box\thr@@})%
+      #3(#4\sb{\box6})%
     \fi
   \fi
 }
@@ -1619,39 +1646,46 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \begin{macro}{\@actinssc}
 % \begin{macro}{\@actannsc}
 % \begin{macro}{\@actothersc}
+% \begin{macro}{\acts@actsc}
+% \begin{macro}{\acts@@actsc}
+% \begin{macro}{\acts@@@actsc}
 %   We first define the internal macros and parsing macros used to
 %   define shortcuts for insurance benefits (\cmd{\@actinssc}),
 %   annuity benefits (\cmd{\@actannsc}) and simple symbols
 %   (\cmd{\@actothersc}).
 %    \begin{macrocode}
-\newcommand\@actinssc[1]{%
+\newcommand*\@actinssc[1]{%
   \@ifstar{\acts@actsc{\bar{#1}}}%
           {\acts@actsc{#1}}}
-\newcommand\@actannsc[1]{%
+\newcommand*\@actannsc[1]{%
   \@ifstar{\@ifstar{\acts@actsc{\ddot{#1}}}%
-                   {\acts@actsc{\bar{#1}}}}
+                   {\acts@actsc{\bar{#1}}}}%
           {\acts@actsc{#1}}}
-\newcommand\acts@actsc[1]{%
-  \@ifnextchar[{\acts@@actsc{#1}}%
-               {\acts@@actsc{#1}[]}}
+\newcommand*\acts@actsc[1]{%
+  \new@ifnextchar[{\acts@@actsc{#1}}%
+                  {\acts@@actsc{#1}[]}}
+\newcommand*\@actothersc{}
 \let\@actothersc\acts@actsc
-\newcommand\acts@@actsc{}
+\newcommand*\acts@@actsc{}
 \def\acts@@actsc#1[#2]{%
-  \@ifnextchar[{\acts@@@actsc{#1}[#2]}%
-               {\acts@@@actsc{#1}[#2][]}}
-\newcommand\acts@@@actsc{}
+  \new@ifnextchar[{\acts@@@actsc{#1}[#2]}%
+                  {\acts@@@actsc{#1}[#2][]}}
+\newcommand*\acts@@@actsc{}
 \def\acts@@@actsc#1[#2][#3]#4{%
-  \@ifnextchar[{\@actsymbol[#2][#3][]{#1}{#4}}%
-               {\@actsymbol[#2][#3][]{#1}{#4}[]}}
+  \new@ifnextchar[{\@actsymbol[#2][#3][]{#1}{#4}}%
+                  {\@actsymbol[#2][#3][]{#1}{#4}[]}}
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
 % \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
 % \begin{macro}{\DeclareRobustCommand}
 %   We can now define all the shortcuts of \autoref{tab:principal}.
 %    \begin{macrocode}
-\DeclareRobustCommand{\lx}{\@actothersc {\ell}}
-\DeclareRobustCommand{\Lx}{\@actothersc {\mathcal{L}}}
+\DeclareRobustCommand{\lx}{\@actothersc\ell}
+\DeclareRobustCommand{\Lx}{\@actothersc{\mathcal{L}}}
 \DeclareRobustCommand{\dx}{\@actothersc d}
 \DeclareRobustCommand{\Dx}{\@actothersc{\mathcal{D}}}
 \DeclareRobustCommand{\px}{\@actothersc p}
@@ -1669,26 +1703,32 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \label{sec:implementation:actsymb:premressc}
 %
 % \begin{macro}{\@actpremres}
+% \begin{macro}{\acts@actpremres}
+% \begin{macro}{\acts@@actpremres}
+% \begin{macro}{\acts@@@actpremres}
 %   Not unlike above, we first define the internal and parsing macros
 %   used to create shortcut for premiums, reserves and paid-up insurance
 %   symbols.
 %    \begin{macrocode}
-\newcommand\@actpremres[1]{%
+\newcommand*\@actpremres[1]{%
   \@ifstar{\acts@actpremres{\bar{#1}}}%
           {\acts@actpremres{#1}}}
-\newcommand\acts@actpremres[1]{%
-  \@ifnextchar[{\acts@@actpremres{#1}}%
-               {\acts@@actpremres{#1}[]}}
-\newcommand\acts@@actpremres{}
+\newcommand*\acts@actpremres[1]{%
+  \new@ifnextchar[{\acts@@actpremres{#1}}%
+                  {\acts@@actpremres{#1}[]}}
+\newcommand*\acts@@actpremres{}
 \def\acts@@actpremres#1[#2]{%
-  \@ifnextchar[{\acts@@@actpremres{#1}[#2]}%
-               {\acts@@@actpremres{#1}[#2][]}}
-\newcommand\acts@@@actpremres{}
+  \new@ifnextchar[{\acts@@@actpremres{#1}[#2]}%
+                  {\acts@@@actpremres{#1}[#2][]}}
+\newcommand*\acts@@@actpremres{}
 \def\acts@@@actpremres#1[#2][#3]#4{%
-  \@ifnextchar[{\@actsymbol[#2][#3][#1]{{#4}}{}}%
-               {\@actsymbol[#2][#3][#1]{{#4}}{}[]}}
+  \new@ifnextchar[{\@actsymbol[#2][#3][#1]{{#4}}{}}%
+                  {\@actsymbol[#2][#3][#1]{{#4}}{}[]}}
 %    \end{macrocode}
 % \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
 % \begin{macro}{\DeclareRobustCommand}
 %   Then we can define the shortcuts of \autoref{tab:premres}.
 %    \begin{macrocode}
@@ -1708,13 +1748,14 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   Here we define the shortcuts for common auxiliary symbols listed in
 %   \autoref{tab:aux}. Command \cmd{\joint} is simply defined as an
 %   alias of \cmd{\overline}.
+%   \changes{1.1}{2019-01-08}{The colons used here are not \cmd{\mathrel}'s.}
 %    \begin{macrocode}
-\DeclareRobustCommand{\term}[2]{\itop{#1}:\angl{#2}}
-\DeclareRobustCommand{\termxn}{{\itop{x}:\angln}}
-\DeclareRobustCommand{\pureendow}[2]{#1:\itop{\angl{#2}}}
-\DeclareRobustCommand{\pureendowxn}{{x:\itop{\angln}}}
-\DeclareRobustCommand{\endow}[2]{#1:\angl{#2}}
-\DeclareRobustCommand{\endowxn}{{x:\angln}}
+\DeclareRobustCommand{\term}[2]{\itop{#1}{:}\angl{#2}}
+\DeclareRobustCommand{\termxn}{{\itop{x}{:}\angln}}
+\DeclareRobustCommand{\pureendow}[2]{#1{:}\itop{\angl{#2}}}
+\DeclareRobustCommand{\pureendowxn}{{x{:}\itop{\angln}}}
+\DeclareRobustCommand{\endow}[2]{#1{:}\angl{#2}}
+\DeclareRobustCommand{\endowxn}{{x{:}\angln}}
 \let\joint\overline
 %    \end{macrocode}
 % \end{macro}
@@ -1726,9 +1767,10 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \begin{macro}{\twoletsymb}
 %   The definition of the user level command \cmd{\twoletsymb} is
 %   pretty straighforward.
+%   \changes{1.1}{2019-01-08}{Use relative length.}
 %    \begin{macrocode}
 \newlength{\twoletkern}
-\setlength{\twoletkern}{1.2pt}
+\setlength{\twoletkern}{0.1em}
 \DeclareRobustCommand{\twoletsymb}[3][\twoletkern]{(#2\kern-#1#3)}
 %    \end{macrocode}
 % \end{macro}
@@ -1739,31 +1781,31 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   to create shortcuts for two-letter insurance and annuity benefit
 %   symbols.
 %    \begin{macrocode}
-\newcommand\@twoletinssc[3][\twoletkern]{%
+\newcommand*\@twoletinssc[3][\twoletkern]{%
   \@ifstar{\twoletsymb[#1]{#2}{\bar{#3}}}%
           {\twoletsymb[#1]{#2}{#3}}}
-\newcommand\@twoletannsc[3][\twoletkern]{%
+\newcommand*\@twoletannsc[3][\twoletkern]{%
   \@ifstar{\@ifstar{\twoletsymb[#1]{#2}{\ddot{#3}}}%
                    {\twoletsymb[#1]{#2}{\bar{#3}}}}%
           {\twoletsymb[#1]{#2}{#3}}}
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
-% \begin{macro}{\newcommand}
+% \begin{macro}{\newcommand*}
 %   Follow the shortcuts of \autoref{tab:twoletsymb}. Note that we
 %   used a smaller negative kerning adjustment for symbols annuity
 %   symbols.
 %    \begin{macrocode}
-\newcommand{\IA}{\@twoletinssc IA}
-\newcommand{\IbA}{\@twoletinssc{\bar{I}}A}
-\newcommand{\ImA}{\@twoletinssc{I^{(m)}}A}
-\newcommand{\DA}{\@twoletinssc DA}
-\newcommand{\DbA}{\@twoletinssc{\bar{D}}A}
-\newcommand{\DmA}{\@twoletinssc{D^{(m)}}A}
-\newcommand{\Ia}{\@twoletannsc[0.5\twoletkern]Ia}
-\newcommand{\Is}{\@twoletannsc[0.5\twoletkern]Is}
-\newcommand{\Da}{\@twoletannsc[0.5\twoletkern]Da}
-\newcommand{\Ds}{\@twoletannsc[0.5\twoletkern]Ds}
+\newcommand*{\IA}{\@twoletinssc IA}
+\newcommand*{\IbA}{\@twoletinssc{\bar{I}}A}
+\newcommand*{\ImA}{\@twoletinssc{I^{(m)}}A}
+\newcommand*{\DA}{\@twoletinssc DA}
+\newcommand*{\DbA}{\@twoletinssc{\bar{D}}A}
+\newcommand*{\DmA}{\@twoletinssc{D^{(m)}}A}
+\newcommand*{\Ia}{\@twoletannsc[0.5\twoletkern]Ia}
+\newcommand*{\Is}{\@twoletannsc[0.5\twoletkern]Is}
+\newcommand*{\Da}{\@twoletannsc[0.5\twoletkern]Da}
+\newcommand*{\Ds}{\@twoletannsc[0.5\twoletkern]Ds}
 %    \end{macrocode}
 % \end{macro}
 %
@@ -1771,8 +1813,8 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \label{sec:implementation:preced}
 %
 % The system of precedence numbers builds on a backbone that used to
-% be part of package \pkg{actuarialangle}. The author of the code is
-% unknown. Some of the comments on \cmd{\@precendence}, below, are his
+% be part of the package \pkg{actuarialangle}. The original author of the code is
+% unknown. Some of the comments on \cmd{\@precedence}, below, are his
 % or hers.
 %
 % \subsubsection{User level lengths and commands}
@@ -1784,15 +1826,16 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \begin{macro}{\nthbottomskip}
 %   Let us start by defining the lengths needed to position the
 %   precedence numbers above or below the statuses.
+%   \changes{1.1}{2019-01-08}{Use relative lengths.}
 %    \begin{macrocode}
 \newlength{\nthtopsep}
-\setlength{\nthtopsep}{2\p@}
+\setlength{\nthtopsep}{0.18em}
 \newlength{\nthtopskip}
-\setlength{\nthtopskip}{7\p@}
+\setlength{\nthtopskip}{0.64em}
 \newlength{\nthbottomsep}
-\setlength{\nthbottomsep}{2\p@}
+\setlength{\nthbottomsep}{0.18em}
 \newlength{\nthbottomskip}
-\setlength{\nthbottomskip}{9\p@}
+\setlength{\nthbottomskip}{0.82em}
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -1805,13 +1848,13 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %    \begin{macrocode}
 \DeclareRobustCommand{\nthtop}{\@ifstar\@varnthtop\@nthtop}
 \DeclareRobustCommand{\nthbottom}{\@ifstar\@varnthbottom\@nthbottom}
-\newcommand{\@nthtop}[3][\nthtopsep]{%
+\newcommand*{\@nthtop}[3][\nthtopsep]{%
   \mathpalette{\@precedence t\z@{#1}{#2}}{#3}}
-\newcommand{\@varnthtop}[3][\nthtopskip]{%
+\newcommand*{\@varnthtop}[3][\nthtopskip]{%
   \mathpalette{\@precedence t{#1}\z@{#2}}{#3}}
-\newcommand{\@nthbottom}[3][\nthbottomsep]{%
+\newcommand*{\@nthbottom}[3][\nthbottomsep]{%
   \mathpalette{\@precedence b\z@{#1}{#2}}{#3}}
-\newcommand{\@varnthbottom}[3][\nthbottomskip]{%
+\newcommand*{\@varnthbottom}[3][\nthbottomskip]{%
   \mathpalette{\@precedence b{#1}\z@{#2}}{#3}}
 %    \end{macrocode}
 % \end{macro}
@@ -1834,10 +1877,11 @@ This work consists of actuarialsymbol.dtx and the derived files.
 % \begin{macro}{\@varnthtop}
 % \begin{macro}{\@varnthbottom}
 %   Option |compactpreced| does the opposite.
+%   \changes{1.1}{2019-01-08}{Add missing \texttt{@}'s in macro names.}
 %    \begin{macrocode}
 \ifacts@compactpreced
-  \let\@varnthtop\nthtop
-  \let\@varnthbottom\nthbottom
+  \let\@varnthtop\@nthtop
+  \let\@varnthbottom\@nthbottom
 \fi
 %    \end{macrocode}
 % \end{macro}
@@ -1865,18 +1909,18 @@ This work consists of actuarialsymbol.dtx and the derived files.
 %   restriction of \cmd{\mathpalette} that it only reads two
 %   arguments.
 %    \begin{macrocode}
-\def\@precedence#1#2#3#4#5#6{%
+\newcommand*\@precedence[6]{%
   \setbox\tw@\hbox{$\m@th#5#4$}%
-  \setbox\z@\hbox{$\m@th#5#6$}
+  \setbox\z@\hbox{$\m@th#5#6$}%
   \dimen@\wd\z@
   \vbox to\ht\z@{%
-    \baselineskip=#2
-    \lineskip=#3
+    \baselineskip=#2%
+    \lineskip=#3%
     \lineskiplimit\lineskip
     \if b#1\relax\box\z@\else\vss\fi
     \hbox to\dimen@{\hss\unhbox\tw@\hss}%
     \if t#1\relax\box\z@\else\vss\fi
-  }
+  }%
 }
 %    \end{macrocode}
 % \end{macro}