This command draws a curve from a perpendicular tangent line with a known radius and delta angle. It prompts for the radius, the delta angle and then to pick the P.C. start point of the curve and a point along the tangent line.
Precede radius with - sign for curve to the left.
Radius of Arc <300.00>: press Enter
Enter Delta Angle <90.00>: press Enter
PC Start Point ?
Number/<Pick point>: pick a point
[nea on] Pick point along perpendicular tangent line: pick a
point
Pulldown Menu Location: Draw > Arc
Keyboard Command: srda
Prerequisite: Tangent lines should be drawn before
execution