doc/filters: document that cas filter supports commands

diff --git a/doc/filters.texi b/doc/filters.texi
index bf26cb27b8e5ee49d1be1acc9ab5efc00bec68ca..5925cf038c746c8856acd24ad4b87398675470ef 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -7666,6 +7666,9 @@ Set planes to filter. Default value is to filter all
 planes except alpha plane.
 @end table
 
+@subsection Commands
+This filter supports same @ref{commands} as options.
+
 @section chromahold
 Remove all color information for all colors except for certain one.