When a fixture has active output on lets say 50%, typing fixture# @+10 enter wil bring the intensity of the fixture at (50+10=)60% in the programmer.
Typing Fixture# @-10 enter wil bring the intensity at 50% in the programmer. It dous not deduct the 10%!
second time typing @-10 enter will do what's expected.
Have seen the same behaviour on 4.2, did not check this in 4.3.1
