Everybody wants solid uran and plut to make nuclear weapons, solid uran and plut could be a new element that when broken would turns into uranium and plut, so the saves continues working :D and a more reactive plutonium, and more high explosives
Just make URAN and PLUT with tmp=1 or tmp2=1 or something set it's vx and vy to 0,
making solid PLUT/URAN without adding another element like EXOT
tpt.el.uran.falldown=0
tpt.el.plut.falldown=0
The console can run lua commands and normal commands such as !set and stuff. Lua can also be used in scripts.
All you need is a text editor, even notepad works