Library /sys$common/syshlp/basichelp.hlb Compile time errors, XYPOIREQ  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  ERROR - In a graphics statement (such as PLOT LINES),  you  typed  two
  semicolons   (;)   in   the  list  of  points  without  an  X,Y  point
  specification between them.  Supply another point or remove the  extra
  semicolon.