* changes. Initially calls the given function for all known
* peers and then only signals changes.
*
- * If include_friend_only is set to GNUNET_YES peerinfo will include HELLO
+ * If @a include_friend_only is set to #GNUNET_YES peerinfo will include HELLO
* messages which are intended for friend to friend mode and which do not
* have to be gossiped. Otherwise these messages are skipped.
*