This entity is
not in the
FGD by default.
It should not be put directly in a map.
info_hang_lighting
is a point entity available in 
Left 4 Dead series. It's automatically created when player hangs from ledge and it's set as their lighting origin.
Note:Special property of entity having this classname is that when CTerrorPlayer's ResetLightingOrigin method is called it checks if their current lighting origin entity's classname is info_hang_lighting and then removes it
Bug:If player's SetLightingOrigin input is used during hanging the info_hang_lighting
is not removed [todo tested in ?]
Bug:Going idle or taking over a character while hanging removes info_hang_lighting which results in situation shown in third example [todo tested in ?]
Position where the entity spawns
Example of why info_hang_lighting is needed
Example of how the situation would look like without info_hang_lighting
See Also