$include

$include is a QC command available in all Source games. It's used to insert the contents of another .qc (or .qci, for clarity) file as though they were part of the parent file.

Note:The new QC is always loaded relative to the current QC's directory - it is not affected by $pushd or $cd!

Tip:Compiled MDL files can also be included with $includemodel.

Example

When the included file is in the same folder as the current one:

$include "ragdoll.qci"