Name: query_var - get specific variable settings from a player

Syntax:
	mixed query_var(string name)

Description:
	The query_var call returns the setting of the environment variable
	name. Possible environment variables are listed in help set.

Return value: 
	The value of the environment variable, if set, else 0.

Examples:
	string home;
	home=this_player()->query_var("home");

See also: player/list_variables, helpdir/set