Problem:
How do I store a Curve with Degree of Curvature (DOC) instead of Radius
Solution:
When prompted for the radius, type the degree of curve as following:
d 4.5125 (in decimal degrees)
d 4.5125
or
d 4^30'45" (in dms)
d 4^30'45"
These will resolve to a radius of 1269.713. Also, the manipulators for the radius will show the DOC entered: