====== BBCY Command ======

BBCY,<num>,<points>,<yield>,<Y1>, ... <Yn>

This Command along with [[com:BBCX]] 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 either the [[com:BBCI]] and [[com:BBCP]] commands or load a curve stored in a file with the [[com:BBC]].

  * num - number of the backbone curve
  * points - number of points in the curve
  * yield - yield point for the curve
  * <Y1> ... <Yn> - Y component of the points on the curve