Doom Developers Kit Vol 1, addon

This is the Doom Developer's Kit (Vol 1.) from Diamond Data in Denmark, This CD has editors for making the sounds, textures, levels, graphics and more for Doom, Doom II, and Heretic, A large amount of wads for Doom, Doom II and Heretic, and some goodies, This file is from Archive.org and I do not take credit for it, nor do I own anything on this CD either.