Catalyst Points
From Eterna Wiki
Catalyst points do not necessarily change energy in a loop, but may change the energy of the loop that results from bonds breaking. (Definition Brourd)
If you are looking to understand what a U-U boost or U-U mismatch is useful for, then you have come to the right place!
Blue boost points might not work in the lab. But they do in player puzzles. Namely in some of Brourd’s.
The definition of a catalyst point is a U or C that doesn’t seem to lower the energy of a loop in the way a boost point would, yet when placed in a loop, helps solve the puzzle. (Definition Starryjess)
See Starryjess post on this topic under catalyst points in Tips and tricks guide
