int pascal VidClearLine(int row, int col, int maxcol, WORD attr, 
                        BYTE fillchar, int iMonitor)

  This is a very low level function which is used to fill part of a
row with a specified "fill" character.

Parameters
  row and col are the 0-based starting coordinates.
  maxcol is the 0-based column which represents the last column to fill.
  attr is the color attribute of the fill character.
  fillchar can be any character, and will be used to fill the area.
  iMonitor is the monitor number. For most applications, this should
   be set to 0.
Returns
  Nothing.