diff --git a/docs/docs.pdf b/docs/docs.pdf
index 9894b12..87426a5 100644
Binary files a/docs/docs.pdf and b/docs/docs.pdf differ
diff --git a/docs/parts/reference.tex b/docs/parts/reference.tex
index 1be4344..89e2e24 100644
--- a/docs/parts/reference.tex
+++ b/docs/parts/reference.tex
@@ -7,6 +7,7 @@
     \item \textit{math}: Any math input
     \item \textit{number}: Any non-negative integer, i.e. no commas
     \item \textit{color}: Any of the \texttt{dvipsnames} colours of \texttt{xcolor}
+    \item \textit{langauge}: 2-character country code (currently only \texttt{de} and \texttt{en} supported)
 \end{itemize}
 
 \subsection{Per-File config}