This was discovered by diniumrock, in ID:2688343. I made my save based on this. Drawing CLNE over it destroys it, unfortunately, along with filling the particle limit, etc. It has uses, though.
if you place NSCN touching it then its basically as strong as some big block of pcln, but without nscn you can use a eraser (maybe subframe)
Here is how to destroy it: 1. Fill at least ~1/3 of the screen with WHOL (doesn't matter left or right side), 2. Set tmp (not temp) of WHOL to 2147483647, 3. Select the largest brush size (so it will reach particle limit when you draw with it), 4. Hold PROT on it. After some time PROT will start destroying it (if not try releasing it for some time and holding it again), and when it stops destroying it you can remove remaining particles with erase tool
Might act weird because of the EHOLE
QRTZ, GLAS & FILT Does not destroy it now, conv removes those materials now
AlexDiego: You can erase everything paused
cool but you can destroy it with QRTZ or just erase it while paused, +1