Keys: press U, V or W to pick a tip. Press B to pick the base point. Press an arrow key to move it one step. Hold Shift with an arrow key to move it five steps. Press 1 to 5 to pick an operation.
Vectors
u =()
v =()
With Snap on, one step is 1. With Snap off, one step is 0.1.
Operation
−303
R
Third vector
w =()
With a third vector on, Sum and Difference draw all three tip to tail.
Base point
base()
Under Draw, a dashed copy of u is drawn from a draggable base point. The same vector can be drawn from any base point.