Draft it Help
Available in: Architectural, PRO & PLUS Only
The Angle Lock feature can be switched on/off as required with the button. Angle Lock forces the current input angle to be fixed at 45 degree increments. Therefore 0, 45, 90, 135, 180, 225, 270, 315 are the only angles that can be selected. This can be used in conjunction with the Direct Input feature to quickly enter directions and distances at these common angles.
So for example if the Line command was selected and the 1st point indicated you would see that the dynamic line from the 1st point is locked to the nearest 45 degree angle, as you move the cursor you will see the dynamic line jumping to the nearest 45 degree increment.