From HLSW Wiki
This is a small but flexible plugin which lets you filter and add entities to a map before it loads, much like Stripper2 for Half-Life 1, by botman.
You can filter out entities with specific values or regular expressions, or declare new entities to be added. You can also specify per-map configuration options.
--K0riz0n 22:04, 6 June 2006 (CEST)