+\begin_layout Subsection
+undertilde
+\end_layout
+
+\begin_layout Description
+Found:
+\begin_inset Info
+type "package"
+arg "undertilde"
+\end_inset
+
+
+\end_layout
+
+\begin_layout Description
+CTAN:
+\family typewriter
+macros/latex/contrib/undertilde/
+\end_layout
+
+\begin_layout Description
+Notes: The package
+\family sans
+undertilde
+\family default
+ provides the
+\family sans
+
+\backslash
+utilde
+\family default
+ command.
+ It is needed by LyX to underline symbols with a tilde in formulas.
+\end_layout
+