Limited support
This feature is only present in Portal 2: Community Edition and Portal: Revolution.

paintblob_tbeam_vortex_distance

🟦 Executable on Client

paintblob_tbeam_vortex_distance <value>

Blob will do vortex if blob's distance from start or end point of the beam is within this distance

Warning:

This is a cheat command and can only be used when sv_cheats is set to 1.

Note:

The value is synced between the server and all clients.