TeleWeapon Patch is a modification for Quake made by Ronald E. Mercer (the_DM) on August 28, 1996. This modification is intended to fix or add features that Ronald felt should have been in the game to begin with.
The main feature of this modification is that various entities will go through Teleporters. The Nailgun, Super Nailgun, Grenade Launcher, and Rocket Launcher can all fire projectiles though Teleporters. Note that all but the Grenade Launcher can randomly not teleport, plus lose their velocity after being teleported. While bugs, the designer felt it also added some randomness and unpredictability to the game. Backpacks and Gibs can also go through Teleporters.
This modification also fixes an issue with the original game that would kill players near (as opposed to in) the Water when a Thunderbolt was discharged. This was an issue that had been complained about in LAN games.
Furthermore, the Thunderbolt can cause damage to things in the Water (such as Rotfish or enemy players) by firing at the Water. Everything in the Water will take 1 point of damage unless they move far enough away from the lightning bolt or get out of the Water.