To snap the architect perpendicular to the helpers:
Move the helpers such that the line created by joining the helpers has a point where you want to place the architect.
In the Snaps menu, click Snap to perpendicular foot. Alternatively you can click on Ctrl + F. The architect will travel perpendicularly and rest itself on the point aligned to the two helpers.
Press F1 inside the application to read context-sensitive help directly in the application itself ←∈
snapping_architect_to_perpendicular.1411477274.txt.gz ยท Last modified: (external edit)