View zoom only changes what you see on screen. The page and the exported file stay the same size. A scroll gesture is one undo step.
V Select
C Cut
B Speech bubble
T Thought bubble
K Caption
S Sound effect
Shift Snap a cut horizontal or vertical
Scroll Zoom the selected picture while the pointer is over it
Ctrl+Scroll Zoom that picture toward the pointer
Alt+Scroll Rotate 1° per notch
Ctrl+V Paste an image into the selected panel, or into the bank
Shift+Alt+Scroll Rotate in 15° steps
Shift while dragging the handle snaps to 15°
Side panel: flip horizontal, flip vertical, turn 90°, reset rotation, reset framing
Ctrl+0 Fit the page in the window
Ctrl+1 100%, actual pixels
+ − Zoom the view in or out
Ctrl+Scroll Zoom the view toward the pointer, unless the pointer is over the selected picture or lettering
Corner menu: Fit, 50%, 100%, 200%, 400%
Space+drag Pan
Middle-mouse drag Pan
Scroll Scroll the page, except over the selected picture
Drag to move. Double-click to edit. Drag handles to resize, rotate, or move a tail
Ctrl+Scroll Resize the selected lettering
Alt+Scroll Rotate it 1° (Shift snaps to 15°)
Delete Remove it
Ctrl+Z Undo
Ctrl+Y or Ctrl+Shift+Z Redo
Delete or Backspace Delete the selection
Ctrl+S Save the project
Esc Close this panel, cancel a cut, or return to Select
? Open this panel