The black casing rc169 put under every spot marker made the markers harder
to read for some users, so it is now off by default; the "Outline spots in
black" checkbox under "Image features" switches it on, and with it off the
spots draw exactly as before rc169. The N-highest-pixel markers change from
feature-coloured crosses to a white frame in a black casing: a frame points
at the pixel inside it, where a cross sits on top of the very pixel it
marks. The frame is slightly smaller than a spot frame and drawn above it,
so both stay visible when a top pixel falls inside a spot.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
leonarski_fandClaude Fable 5
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