Keyboard, for the impatient.
Layouts
1 by family · 2 tower, foundations at the bottom · 3 rings, most used in the centre · F or double-click on empty space = fit everything.
Reading
T shows the full transitive chain of the selected module, not just its direct links · R auto-rotation · arrows orbit, + - zoom.
Finding
/ jumps to the search box, Enter selects the first match, Esc clears the selection. Double-click a cube to open its documentation.
UGTKengine within an engine