| F · pick a type | New frame: click to drop it, drag to size it, or Enter to place it next to the others |
| Double-click · U + double-click | New entity · new UDE, in empty frame space |
| Right-click | Everything you can do with what you clicked: a box, an arrow, a frame or the canvas |
| Hover a box | ＋ handles: bottom cause, top effect, sides sibling |
| P · A · M · O | Parallel · AND · MAG · exclusive OR: dial, held while dragging, ⌥ shortcuts |
| Click / drag a side ＋ | Sibling (the dial asks which junction). Drag to place it, or onto a box |
| Click top / bottom ＋ | New effect above / new cause below |
| Drag top ＋ across arrows | Picks the arrows crossed; let go in empty space, then choose the junction |
| Drag top ＋ onto a box | Parallel arrow into that box |
| Reinforcing loop | Drag the top ＋ of a box onto a lower box it already leads up to. It is drawn around the outside and can join an AND like any arrow |
| Tab · ⇧Tab · ⇧Enter | New cause · new effect · new sibling (dial) |
| ⌥P ⌥A ⌥M ⌥O | New sibling with that junction, no dial |
| Drag a box · ⌘-click · drag on empty | Move · add to selection · select an area |
| U · Enter · Esc | Entity↔UDE · edit or finish · cancel |
| Click a junction | Change it |
| R · C · B | Root cause · critical root cause (CRC, light green) · boundary, on a box with nothing below it |
| % · click (33%) | Set a MAG arrow's share; the MAG always totals 100% |
| Click empty frame space or its title | Select the frame: lock, hide or delete it. Double-click the title to rename |
| ⌘S · ⇧⌘S · ⌘O | Save to a file · save as a new file · open a file. Nothing is stored in the browser |
| X · Break Preview | Toggle: hover a box to see what falls if it is no longer true; click to keep it, ⌘/Shift-click to add more |
| Right-click a frame | Mark every unmarked leaf box as a root cause in one go. Hover a root cause to see how many top UDEs fall if it breaks |
| T · Trace | Toggle: hover a box to light up everything below and above it; select a box to keep it lit |
| ⚡ Potential CRC | Toggle: the fewest root causes that topple each top UDE, with the path it falls along. Skip a candidate to see what's next (not saved); mark it B (boundary) if it truly can't be changed |
| ☰ · Copy as text | The tree as numbered statements and If–then lines, to paste to an AI for review (right-click a frame for just that frame) |
| ⌘K · search | Find frames, boxes, numbers (old ones too). Empty search lists every frame; Enter jumps there |
| Numbers | Each box gets working numbers when it is made; they never change by themselves, even if the tree is rearranged. Each tree frame has its own hundred. Press # (Renumber) when the tree is final to put them in Dettmer's order |
| # · Wand (tree header) · ⊠ | Renumber · auto-arrange a tree from its header · clear a frame from its own toolbar (select the frame) |
| Phone · tablet | Pinch to zoom · two fingers to pan · Double-tap empty frame space for a new box · tap a box for its ＋ · Long-press for the menu |
| Space-drag · scroll | Pan · pinch or ⌘-scroll to zoom |