https://www.sf4remix.com/lilith/doombuilderx-2.1.3.11-alpha6.zip   new alpha version. the changes that made it to the official changelog are: - fixed lighting levels to clamp to 0-256 not 0-255. you can still manually type in negative or >256 values - fixed certain panels not displaying textures/sprites in windows 8/10 High Contrast mode - some things that use the same sprites have been changed to have their editor preview to use a different frame (demon/spectre for example)   in addition there have been some internal bugfixes to the new features, as well as some new / renamed scripts   most notably the skew script   also since i didn't mention, the lua API is documented (badly) on the github wiki, if you want to get started on scripts yourself. hopefully the source code to the scripts are more helpful at explaining what's going on. hopefully it should be relatively comprehensible if you're proficient in something like ACS or ZScript?