I prefer to use a Wacom pad with my mac (and that makes sense for a graphically oriented app like SpectraLayers).
The cursor position, selecting tools, and parameter controls along the top of the window are all controllable with the pen.
the overview selection area and the spectrograph don’t respond to pen (ie mouse) clicks at all.
Is there a setting somewhere that I need to change, or does the Wacom not work at all with SL?
(I’m also finding that the magic mouse surface is a bit too overreactive with SL - I keep accidentally zooming the spectrograph vertically and horizontally with the slightest graze of a finger. Maybe I should dig out an old cabled mouse with a scroll wheel)