====== BBCX Command ======

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

This Command along with [[com: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 [[com:BBCI]] and [[com:BBCP]] command or load a curve stored in a file with the [[com: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