When you need to make sure your geometries are placed precisely, use snaps and ortho.

Hold S to enable snaps.

With snaps enabled, the cursor attaches to points based on your snap settings. Click to place the point the cursor is attached to.

Choose what the cursor snaps to, like corners, midpoints, edges, and map features, in Snap Settings.

When Always on is enabled in snap settings, snapping stays active while you draw. Hold S to turn it off for a moment.

Ortho snaps are a drafting classic. In Giraffe, orthographic directions are based on North-South and East-West. This could be True North, or Project North.

Hold shift to snap to orthographic angles.

90 degree (rectangles)

15 degree (polygons)

Move entire geometries (90 degrees)

Move Control Points (15 degrees)