--- a/docs/_latex/my-doc-style.sty	Tue Jun 02 12:33:54 2026 +0200
+++ b/docs/_latex/my-doc-style.sty	Sat Jun 06 12:12:06 2026 +0200
@@ -19,7 +19,7 @@
 %
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesPackage{my-doc-style}[%
-  2026/06/02 rv:c7ae4cfc2c5c (Franz Glasner) Some style customizations (title et al.)]
+  2026/06/06 rv:ddd6d2bb4fdb (Franz Glasner) Some style customizations (title et al.)]
 \RequirePackage{xkeyval}
 \RequirePackage{hologo}
 
@@ -37,6 +37,10 @@
 \DeclareRobustCommand*\builddate[1]{\gdef\mds@builddate{#1}}
 \vcsrevision{}
 \builddate{}
+
+% \textsf consumes an argument!
+\newcommand{\mds@titlefont}{\textsf}
+\newcommand{\mds@titlefontsize}{\small}
 %
 % If the option "stdtitle" was not enabled augment the titlepage with
 % the documentation build date and the VCS revision id.
@@ -49,10 +53,10 @@
     \ifx\mds@builddate\@empty\relax%
       \ifx\mds@vcs@revision\@empty\relax%
       \else%
-        \hfill\normalsize\textsf{(rev\ \mds@vcs@revision )}%
+        \hfill\mds@titlefontsize\mds@titlefont{(rev\ \mds@vcs@revision )}%
       \fi%
     \else%
-      \hfill\normalsize\textsf{Last updated on \mds@builddate%
+      \hfill\mds@titlefontsize\mds@titlefont{Last updated on \mds@builddate%
       \ifx\mds@vcs@revision\@empty\relax\else\enspace(rev\ \mds@vcs@revision )\fi}
     \fi%
   }
@@ -117,6 +121,21 @@
 }
 
 %
+% Use the installed sans font as document body font and let all headings
+% use the main/serif font.
+%
+\newcommand{\SwitchFamilyDefaultToSans}{%
+  \renewcommand*{\familydefault}{\sfdefault}
+  \@ifpackageloaded{fncychap}{%
+    \ChNameVar{\Large\rm}
+    \ChTitleVar{\large\rm}
+  }{}
+  \renewcommand{\mds@titlefont}{\textrm}
+  \renewcommand{\mds@titlefontsize}{\footnotesize}
+  \renewcommand{\DUroletextother}{\textrm}
+}
+
+%
 % For SmallCaps support and/or custom reST roles:
 % see also: https://docutils.sourceforge.io/docs/user/latex.html
 %
@@ -133,8 +152,19 @@
 % expects one and will consume it instead.
 \newcommand{\DUroletextsf}{\textsf}
 
+% Testing serif fonts with ":textrm:" role
+% Here without argument declaration because \textrm
+% expects one and will consume it instead.
+\newcommand{\DUroletextrm}{\textrm}
 
-% TeX logos using hologo
+% Testing serif fonts with ":textother:" role
+% Here without argument declaration because \textrm or \textsf
+% expect one and will consume it instead.
+\newcommand{\DUroletextother}{\textsf}
+
+
+% TeX logos using hologo.
+% The role argument will consumed by the \hologo command.
 \newcommand*{\DUrolehologo}{\hologo}
 
 \endinput