no, you cant save it, but you can press "s" to save a stamp of it.
indeed. it is good that they are picky.
There is reason behind element selection, there is no point adding elements that waste id's and break saves
also if you set pluts loss 0 in a lua script
then if tmp or what ever is 1 then -> set vy, vx 0
then now when plut is set to a tmp of 1 it should stand still and not move
this just takes up a lot of room,lol. there special features could be added,and there's probably a way to do it with LUA too. this just basically makes a breakable chunk of solid plutonium(no falling).
edit: haven't checked to see if it does the other PLUT stuff properly,whatever those things may be, just that it emits neutrons when preasurized. just did the paste mostly for the lolz.