cscommands.comparticle_test_start
Dispatches the test particle system with the parameters specified in particle_test_file,<br> particle_test_attach_mode and particle_test_attach_param on the entity the player is looking at.
For this command to work you must first run
sv_cheats true in the console. It only works on a local map or a private server — not in matchmaking. sv_cheats is a built-in Valve command and is completely safe from VAC.