I looked everywhere for this and finally found it:
I wrote the following as notes to myself while trying to piece together this information:
insert: F9 (pushes everything to the right later)
Insert with transition: shift-F9
Superimpose: F12 (defined by in and out marks in the timeline and either in or out in viewer)
Ripple edit: extends boundary, slipping neighbor clips to end of sequence
Roll edit: moves boundary without moving clip content
Play in-out: Shift-
next edit point: ‘
previous edit point ;
Enter numerics: include last 2 digits (frames, up to 30; first digits can be omitted)
Viewer Closeup: option-U (customized: option-select custom arrangement 1)
Normal setup: shift-U (customized: option-select custom arrangement 2)
Open transition editor: Cmd-7
Toggle edit types – U,U,U,U to change transition editor focus
play forward/back/stop in editor: L K J
Close gap: control-g (uses ripple edit)
Clear in-out: option-x
enter marker: `
navigate to next marker: shift- down arrow
previous marker: shift-up arrow
Markers are focus-sensitive. Select a clip to mark it, either in the timeline or by opening it in the viewer.
No clips must be selected to make markers at the Sequence/timeline level.
It’s easiest to set accurate timing markers in the audio panel of the viewer, which is zoomable.
Set video markers by scrubbing to a recognizable event, and advancing or rewinding a frame at a time with the arrow keys
To mark audio peak to frame start (up to 1/100 of a frame):
shift-drag the playhead in the viewer; then mark “in” at playhead. Put a marker at playhead if desired; remove in point if desired; marker stays on sample, as does in point for subsequent edits.
FCE uses “tooltips,” but I don’t read so well these days…
I hope this is of some use to somebody.