That’s it. The commands are now "installed." Every time you launch CS 1.6, Steam will automatically apply them.
The most useful launch option today is manually setting the resolution ( -w -h ) because the in-game menus often fail to detect modern widescreen monitors correctly. cs 16 steam launch options install
Since CS 1.6 runs on the old GoldSrc engine, modern Windows versions (10/11) sometimes have issues with resolution scaling. Here are the recommended launch options. That’s it