add documentation

doc/math/categories/categories.tex

@@ -1,12 +1,17 @@
 \documentclass[full]{l3doc}
 
 \title{The \pkg{mkessler-categories} package}
-\author{Maximilian Keßler}
+\author{Maximilian Ke\ss ler}
 
 \usepackage{mkessler-categories}
 
-\begin{document}
 
+\NewDocumentCommand{\ShowCategory}{m}
+{
+  \cs{#1} & $\csname #1\endcsname$ \\
+}
+
+\begin{document}
 
 \maketitle
 
@@ -64,19 +69,51 @@ We thus use \pkg{imakeindex} to generate the index file.
   Prints the index of categories.
 \end{function}
 
+\section{Language integration}
+
+This package uses \pkg{translator} to translate the package descriptions.
+Currently, only English and German are supported.
+
 \section{Default categories}
 
-The package also provides default categories, these are (by now):
+The package also provides default categories.
+These are shown in \autoref{tab:provided-categories}.
+
+You can view their appearance in the index and their descriptions in the
+index of this documentation.
+Unfortunately, the index is not (yet) compatible with the \texttt{l3doc} class
+which is used for this documentation, so ignore everything before the
+\enquote{@} characters.
+
+\begin{table}[htpb]
+  \centering
+  \begin{tabular}{c | c}
+    Macro & Result \\
+    \hline
+    \ShowCategory{Top}
+    \ShowCategory{hTop}
+    \ShowCategory{Set}
+    \ShowCategory{CHaus}
+    \ShowCategory{Grp}
+    \ShowCategory{Ab}
+    \ShowCategory{CRing}
+    \ShowCategory{Ring}
+    \ShowCategory{Vect}
+    \ShowCategory{Cat}
+    \ShowCategory{Mod}
+    \ShowCategory{Alg}
+    \ShowCategory{Field}
+    \ShowCategory{AffVar}
+    \ShowCategory{Sch}
+    \ShowCategory{GrAb}
+    \ShowCategory{OrdCat}
+  \end{tabular}
+  \caption{caption}
+  \label{tab:provided-categories}
+\end{table}
 
-\begin{gather*}
-  \Top, \hTop, \Set, \CHaus, \Grp, \Ab, \CRing, \Ring, \Vect, \\
-  \Cat, \Mod, \Alg, \Field, \AffVar_k, \Sch, \GrAb, \OrdCat
-\end{gather*}
-  
 \end{documentation}
 
-\MakeCategoryIndex
-
 \PrintIndex
   
 \end{document}