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  Argument
 
    rows       Specifies number of rows
 
  Returns
 
    Integer    Numbers of rows actually set if successful; otherwise 0
 
  Description
 
    The _SetTextRows function specifies the number of text rows to be
    used in the current video mode. This function is only meaningful
    for EGA and VGA adapters. With an EGA, 25- and 43-line text is
    available. With a VGA, 25-, 43-, and 50-line text is available in
    most video modes. In _VRes16Color and _VRes2Color modes, only 30-
    and 60-line text is supported.
 
  _GrStatus Returns
 
    _GrInvalidParameter, _GrParameterAltered