LZWolf is a source port for games and mods built on the Wolf3D engine. It is forked from ECWolf, containing all of ECWolf's features and access to a variant of the Decorate scripting language.
It adds upon those foundations by expanding the API and merging some elements from zDoom in order to expand new mod development. While LZWolf is made with traditional Wolf3D modders in mind, Doom modders also find the engine accessible due to it's similarities with zDoom's own Decorate scripting.
If your question isn't answered in this guide, it may be because it is answered in the ECWolf FAQ. Be sure to check there as well.