$staticprop

$staticprop

• Models where $staticprop has been used may be placed as prop_static entities, or as prop_physics (if they also have physics data and a collision mesh). Note, despite the name, models compiled with $staticprop do not always need to be used as prop_statics.
• Causes all bones to be collapsed in the object; this can only be used when there’s no animation associated with the object, and no ragdoll behavior.
• This should be used for every non-animating, non-ragdoll prop, as it increases the render speed for the model. You want to use it wherever possible though, because it will make the models render more quickly.
• This will also cause the model's shadow to be generated from its collision model when the map is compiled.
• For example:

$modelname "props/rock.mdl"
$cdmaterials "models/props/"
$model "Rock" "rock.smd"
$sequence "idle" "rock.smd"
$staticprop