If I remember correctly if you have a ‘soft’ ‘normal’ or ‘hard’ mode then:
soft will be -10%
normal will be whatever it’s set to
hard will be +10%
Sounds like the same sort of thing but worded differently.
Those modes just modifies the ramp-up (just the initial power kick)
Makes sense, mesh heats quickly... I use soft modes, it allows it to last a bit more