I'll point out that the Half-Life logo is trademarked in the EU in several situations related to video games, including the programming of video games. Be caref

I'll point out that the Half-Life logo is trademarked in the EU in several situations related to video games, including the programming of video games. Be careful attaching it to e.g. a tutorial on using Ferret to write a game, or an integration with a game engine, etc.