Documenting new checkbox for math-only search of advanced find & replace.

diff --git a/lib/doc/UserGuide.lyx b/lib/doc/UserGuide.lyx
index 393608c93a161f5c79d1d394390223a2dc3d3994..a6870251cfb41fd969459e09b4e87d50d97735dc 100644 (file)
--- a/lib/doc/UserGuide.lyx
+++ b/lib/doc/UserGuide.lyx
@@ -31535,6 +31535,12 @@ Search may be format-insensitive, so that the searched text is found in
  a section heading will only be found within section headings
 \end_layout
 
+\begin_layout Itemize
+Search may be restricted to mathematics environments only; this is useful
+ for remangling math notation where one does not want to match any text
+ outside of mathematics environments
+\end_layout
+
 \begin_layout Itemize
 Search may be widened to a specific 
 \emph on