Lfun:	make_chat - make a monster talk once

Synopsis:
	void make_chat()

Description:
	The make_chat call tells a monster to make a chat once. It is
	normally called from within the monster's heart beat rountine 
	according to the chat chance, set with load_chat.

	You shouldn't call this function if you haven't set up a chat array
	using load_chat.

Return value:
	none

Examples:
	make_chat();

See also: monster/load_chat, monster/query_chat, monster/make_a_chat