187f67be_Console_Command_List__Description
[Command or Variable] rasterizer_wireframe [Default Value] 0 [Valid Values] 0-1 [Description] 
This draws the current world scene including the world model (bsp) and all models such weapons, vehicles, characters and effects in wireframe mode, including non-visible geometry that has collision. This command is extremely useful in determining the placement of visiblity portals, please see the section Level Creationfor more details and information.
Console Command List
Description