Fillet

A fillet can be applied to a VRTX using

FRADIUS value

Any value can be supplied in the syntax. A positive value corresponds to a convex fillet radius at the VRTX, a negative value to a concave fillet. Setting FRAD to 0 is equivalent to setting it to OFF. If the fillet radius is set on a VRTX then the spans on either side of it are drawn straight, for example, the BULG attribute of the current and next VRTX are ignored.