= is a primary keyboard key on QWERTY in the first alphanumeric row, but not on QWERTZ for example. OpenMPT has some extra keymaps packaged in extraKeymaps folder. You should load a keymap that corresponds to your layout. I for example have a german QWERTZ layout, so I use Saga's DE_jojo.mkb, which links
Note Off to
AKUT. But for me I changed it to something easier to reach and enter, and that is
< key, which is in the lower left between left Shift key and Y on QWERTZ.
My customizations to Saga's file for QWERTZ:
- == (Note Off) set to < key instead of AKUT key
- ^^ (Note Cut) set to Shift + < instead of ZIRKUMFLEX
- ~~ (Note Fade) set to Shift + + (plus sign) instead of ß (esszett ligature)
The keys mentioned in the Wiki are the default shortcuts for a US QWERTY layout, but you can customize each action in OpenMPT Setup dialog, even define multiple shortcuts for each action. In your case you would have to modify the actions in the
Pattern Editor - Note Column category.