$include

The $include QC command is used to include the contents of an external .qc, .qci, or .mdl file as though they were part of the parent file.

QC syntax example 1

• If another model uses a very similar skeleton to the one you're compiling, simply copy its ragdoll.qc to your model’s folder.
• Otherwise, copy $hl2/models/ragdoll.qc to your model’s folder.
• Then, at the end of your model’s .QC file, add :

$include      "ragdoll.qc".

QC syntax example 2

• This overwrites the normal police animations with a pointer to the shared animations

$modelname     Police_animations.mdl
$includemodel "player\male_anims.mdl"