$modelname

From Valve Developer Community

The $modelname QC command must be used. It specifies the output folder (relative to game_dir/models/) and filename of the compiled model.

Tip: By convention this should be the same name as the QC file, but it doesn't have to be.

Example

$modelname		"weapons/shell.mdl"
$cdmaterials		"models/weapons/"
$body		shell	"shell-ref.smd"
$sequence	idle	"shell-idle.smd"

Including .mdl is optional but makes the script easier to understand.

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