1 files changed, 2 insertions, 0 deletions
diff --git a/src/HelpFile b/src/HelpFile
index 97ce04186..634b0ee45 100644
--- a/src/HelpFile
+++ b/src/HelpFile
@@ -104,6 +104,8 @@ pg, print_grammar: pg
   flags: 
       -printer
       -lang
+      -startcat  -- The start category of the generated grammar.
+                    Only supported by some grammar printers.
   examples:
       pg -printer=cf  -- show the context-free skeleton