[xrefdelta] Restore cross-references since C++17

Author: jensmaurer

source/back.tex

@@ -110,9 +110,9 @@
 
 \clearpage
 \input{xrefdelta}
-\renewcommand{\glossaryname}{Cross-references from ISO \CppXXIII{}}
+\renewcommand{\glossaryname}{Cross-references from ISO \CppXVII{}}
 \renewcommand{\preglossaryhook}{All clause and subclause labels from
-ISO \CppXXIII{} (ISO/IEC 14882:2023, \doccite{Programming Languages --- \Cpp{}})
+ISO \CppXVII{} (ISO/IEC 14882:2017, \doccite{Programming Languages --- \Cpp{}})
 are present in this document, with the exceptions described below.\\}
 \renewcommand{\leftmark}{\glossaryname}
 {