BBCX,<num>,<type>,<points>,<yield>,<X1>, … <Xn>

This Command along with BBCY can be used define a sparse backbone curve in the User Interface, but a large list of coordinates on a single line have caused problems when loading a Pre file. It is recommended that users define a backbone curve with BBCI and BBCP command or load a curve stored in a file with the BBC.

• num - number of the backbone curve
• type - type of backbone curve
• points - number of points in the curve
• yield - yield point for the curve
• <X1> … <Xn> - X component of the points on the curve