Name: environment - get the environment of an object

Syntax:
	object environment()
	object environment(object ob)

Description:
	The environment efun gets the environment of an object. If no
	argument is given, it gets the environment of the current object.

Return value:
	An object pointer to the environment object.

Examples:
	environment()->long();

See also: efun/first_inventory, efun/this_object