NAME
	set_light - add to/query the light level of the current	object

SYNOPSIS
	int set_light(int l)

DESCRIPTION

  An object is by default dark. It can be set to not dark by calling
  set_light(1). The environment will the also get this light.
  The returned value is the total number of lights in this room.
 
  You can set the object to be 'more than dark' by using negative
  values.
 
NOTE
	set_light() can be called in other objects.
	The argument is added to the light of the object.
 
EXAMPLES
	set_light(0) 
	   return the current light level
 
	set_light(1) 
	  make this object somewhat lighter

	this_object() -> set_light(1)
	  Works as well.

	set_light(-set_light(0))
	  Lights out.

SEE ALSO
	efun/set_light

Help topics available:

_get_all_obj	_next_obj	_prev_obj	abs	expand_file_name
frnd	get_objects	getopts	implode_nicely	itoa
line_break	load_object	mapping_rusage	query_ip_name	set_light
sgn	short_date	typep