diff --git a/sugar/chat/chat.py b/sugar/chat/chat.py
index c25585f6..c6454827 100755
--- a/sugar/chat/chat.py
+++ b/sugar/chat/chat.py
@@ -322,6 +322,7 @@ class Chat(activity.Activity):
buf.insert(aniter, "\n")
def _get_first_richtext_chunk(self, msg):
+ """Scan the message for the first richtext-tagged chunk and return it."""
rt_last = -1
tag_rt_start = ""
tag_rt_end = ""
@@ -335,6 +336,7 @@ class Chat(activity.Activity):
return None
def _get_first_sketch_chunk(self, msg):
+ """Scan the message for the first SVG-tagged chunk and return it."""
svg_last = -1
tag_svg_start = "