Snapping and the palette¶
The cursor snaps to endpoints, midpoints and centres you have drawn, names the spot it found, and falls back to the sketch grid.
The sketch palette holds the settings of the sketch you are in. Snap and Sketch Grid can be switched off to place things freely, and Look At turns the view square onto the plane again.
Construction turns what you draw next into orange guide geometry. It never becomes part of the outline, so it suits centre lines and things to constrain against.