Every gesture and key the canvas understands. Keys act on the canvas when it has the keyboard focus (click on it first).

Mouse

Gesture What it does

Double-click empty canvas

Open the search box at the cursor

Double-click a slider’s name

Open the slider editor (name, range, decimals, value)

Left-drag a component

Move it (selected components move together)

Left-click a component

Select it

Left-drag on empty canvas

Select with a rectangle

Left-drag from an output grip to an input grip

Connect them (replaces the input’s wires)

Shift + release on an input grip

Connect and keep the input’s other wires

Left-drag from a wired input grip

Pick its last wire up; drop it on another input to move it, or on empty canvas to delete it

Left-drag along a slider’s rail

Change the value; a click on the rail jumps there

Right-drag

Pan the canvas

Right-click a grip

Data mapping menu: Flatten, Graft, Simplify, Reverse, and Set value… on unwired inputs

Right-click a component

Component menu: Preview, Delete

Mouse wheel

Zoom about the cursor (10 % to 500 %)

Hover a component or a grip

Tooltip with names, description, data summary and messages

Drag an icon from the tabs

Place that component where you drop it

Click an icon in the tabs

Place that component in the middle of the canvas

Keyboard

Keys What it does

Delete or Backspace

Remove the selected components from the canvas (never document objects)

Ctrl+Q

Turn the preview of the selected components on or off

While the canvas has focus it keeps Delete and Ctrl+Q for itself, so they cannot reach FreeCAD by accident: in FreeCAD these keys would delete document objects and quit the program.

Search box

Keys What it does

Typing

Filter by name, nickname, tab or description

↑ / ↓

Move through the results

Enter

Place the highlighted component

Esc

Close without placing anything

Click a result

Place it

FreeCAD commands

These live in the Katydid menu and toolbar of the workbench, so you can also give them your own shortcuts in Tools  Customize  Keyboard.

Command What it does

Katydid  Canvas

Show the canvas (and create it the first time)

Katydid  Bake

Bake the selected canvas components into the document

Ctrl+Z in FreeCAD

Undo the last bake

Double-click the Katydid object in the model tree

Show the canvas for that document
Undo on the canvas itself, a radial menu on Space and copy and paste of components are not available yet; see known limits.