While Caps Lock is on, the tools whose pointer General > Use Precise
Cursors changes show the crosshair, and the saved preference does not
change. The desktop app reads the lock state on macOS, Windows and
Linux X11 and passes each change to the new view.capsLock command. A
change to view.capsLock or usePreciseCursors through app.run refreshes
the canvas pointer. The view.preciseCursors command is labeled Use
Precise Cursors, so command search finds it by the preference's name.
With Preferences > Performance > Real-time Drawing and Editing off, tool
previews are deferred to the release, so a guide dragged out of a ruler
(guide.add) or moved with a selection tool (guide.move) showed only its
position label until the button was released. Guide previews now always
apply as the guide is dragged: the guide is all such a drag shows.
#4646's units and guides lost on reopen don't reproduce for a native
file: a new millimetre document's ruler guides and units survive Save,
Close and Open in .vectorcraft, PDF, .ai and EPS (new regression test,
and live in the app with Background Save). An SVG saved without Preserve
Editing reopens in pixels with no guides, as the reporter saw.
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