Keyboard shortcuts are inactive while you are typing in a text field. The status bar at
the bottom of the window always shows the interactions available in the current mode.
Single-click a toolbar button (or press its key) to use a tool once — it reverts to
Select after one completed action. Double-click the button to latch it for repeated use.
Key
Tool
S
Select
D
Draw channel
P
Add point
C
Add component
R
Draw region (where you press decides what you draw — see below)
I
Insert vertex (only while a channel or region is selected)
One region tool draws everything, and where you press decides what you get: empty space
draws a new region, inside a chamber draws a hole, inside a hole draws a pocket. Placing
a vertex on a wall welds to it. The chip at the cursor names what the release will make,
or why it will not. See Regions & compartments for the welding
rules.