New version out. This one has a "Use Byte Arrays" option that will speed up compiling WADs quite a lot if you have a computer with a good processor and plenty of memory (tick the option if you do). If not, using it will slow things down. Experiement to see what works best for you. LegoRR0.wad now compiles in about 5 seconds on my rig. I have also added a couple of cosmetic changes - you will find them as you use it. Screenshot: Download Here