Reader
← → turn the page · U unfold / fold this opening · Home End first / last · G go to a folio · O grid of every page · B bookmark the page · + − 0 zoom · C crop the page (or hover a page and click ✂ Crop)
3D
Drag to turn the book · Shift-drag or right-drag to pan · scroll or pinch to zoom · ⌥ + arrows turn it from the keyboard (⌥ Shift + arrows pan) · + − zoom
1 front ¾ · 2 spine · 3 head · 4 fore-edge · 5 reader's eye · 0 reset view · [ ] spread · P standing / lying · M block / opening
← → next sheet, or next opening (Shift by quire) · Home End · click a sheet or Space to pull it out · T turn over · U unfold · O open flat · Esc put it back · Enter read from here · double-click to read
V colour the edges by scribe, section, illustration, language, moved or quire · K touching faces (← → step through them) · R replay the last change of order · B bookmark the page
Rearrange (in 3D)
A open or close the Rearrange panel · drag a sheet or a whole quire by ⠿ to move it · the eye hides a quire in 3D, like a layer · click a sheet for more · ⌘Z undo · ⇧⌘Z redo
Crop editor
Drag the four corners onto the page's edges (a magnifier shows while you drag). Shift keeps a rectangle. Arrow keys nudge the selected corner (Shift ×10). Enter save and go to the next page · [ ] previous / next · R turn · + − 0 Z zoom · Esc close
Reader and 3D together
Both views follow the same place: the page you are on in the Reader is the sheet picked out in 3D, and the sheet or opening you pick in 3D is where the Reader opens.