BACKUP IEXP

 Function
  Move the cursor backward a specified number of columns without
  going past column 1.

 Syntax
  BACKUP numcols

   numcols - An integer expression of the number of columns to move backward.
             Valid values are 1 through 79.

 Remarks
  This statement will move the cursor backward, nondestructively, a
  specified number of columns.  It will work with or without ANSI.  If ANSI
  is available (as reported by the ANSION() function) then it will use an
  ANSI positioning command; otherwise it will use the specified number
  of backspace characters.  ANSI is usually faster, but backspace
  characters will get the job done.  Note that you cannot use this
  function to move beyond column 1; to do so would require ANSI.  So, if the
  cursor is already in column 1 this statement will have no effect.  And
  if the cursor is in column 80 the maximum you could move backward would
  be 79 (column 80 - 79 columns = column 1).

  Examples
   PRINT "Rolling dice -- "
   FOR i = 1 TO 10
    LET d1 = RANDOM(5)+1
    LET d2 = RANDOM(5)+1
    PRINT d1,"-",d2
    BACKUP 3
   NEXT
   NEWLINE