Add docstring to option-help.ly.

diff --git a/input/regression/option-help.ly b/input/regression/option-help.ly
index 75c67e6e7d0a8f7b5159481005dd127c4ea8a685..48372d8aa4d4db29ab0f394a5cd2a1d004a53971 100644 (file)
--- a/input/regression/option-help.ly
+++ b/input/regression/option-help.ly
@@ -1,4 +1,9 @@
 \version "2.11.10"
+\header {
+  
+  texidoc = "Print the option help text, for comparison against
+  previous releases."
+}
 
 #(ly:option-usage)