| Playback |
| Space | Play / Pause |
| ← / → | Step one frame back / forward (pauses video) |
| Shift+←/→ | Jump ±10 frames |
| Home / End | First / Last frame |
| , / . | Slower / Faster playback |
| Annotation |
| I | Mark In (start of segment) |
| O | Mark Out → pick label |
| Click + drag a segment | Move the whole segment (incl. point events) along the timeline |
| Drag a segment edge | Resize start / end (state events only) |
| Right-click a segment | Open label picker to reassign behavior (quick) |
| R | Reassign behavior of currently selected segment (quick picker) |
| Edit Annotation |
| Double-click a segment | Open the full Edit Annotation modal to change the behavior |
| E | Open Edit Annotation modal for the currently selected segment |
| Inside edit modal | 1–9 pick behavior · Enter apply · Esc cancel |
| 1 – 9 | Select / assign behavior at that position |
| Escape | Cancel mark / close modal / deselect |
| Del / Backspace | Delete selected segment(s) — works for a single click-selected segment or a whole box-selection |
| Ctrl+Z | Undo last add / delete / reassign / resize |
| Multi-Select (Box-Select) |
| M / ▥ button | Toggle box-select mode |
| Right-click + drag | Drag over the timeline to batch-select every segment the box touches |
| Drag a rectangle | In box-select mode (or hold Alt/Option), left-drag over the timeline for the same batch selection |
| Shift / Cmd + click | Add / remove a single segment to/from the selection |
| Delete | Remove all box-selected segments at once |
| Escape | Clear the box-selection / exit box-select mode |
| Behavior Categories |
| + Add | Click the + button to add a custom behavior |
| × (hover) | Hover a behavior button and click × to remove it |
| Navigation |
| N / P | Next / Previous video |
| ? | Show this help |
| Live Behavior Label |
| (automatic) | A color-coded behavior pill appears at the top of the video for any annotation that contains the playhead frame. |
| B | Toggle the overlay on / off (button: Label: ON / OFF) |
| Video Zoom |
| Mouse wheel over video | Zoom in / out, anchored on the cursor |
| Ctrl + wheel over video | Faster zoom step (handy on trackpads) |
| Click + drag on video | Pan the zoomed view |
| Double-click on video | Reset video zoom to 1× |
| Timeline Zoom & Pan |
| Mouse wheel | Zoom timeline in/out (anchored on cursor) |
| Middle-click + drag | Pan timeline left / right (continuous) |
| Shift + wheel | Pan timeline left / right (discrete) |
| Double-click playhead strip | Reset zoom to fit clip |
| Hover a segment | Tooltip with behavior, time, duration |