From Valve Developer Community
Revision as of 08:09, 30 November 2011 by Mattshu (Script doesn't likey otherlang2|title=)
ConVar is very easy and is very useful for developers looking to take professional images of their work in-game. Disabling cl_drawhud will remove the health, armor, and ammo indicators from your screen so you only have the weapon remaining (which can also be removed).Using the cl_drawhud
Note:The HUD is only visible when cl_drawhud is set to 1.