| 
            plpoin
          ( | n , | 
| x , | |
| y , | |
| code ); | 
      Plot a glyph at the specified points.  (This function is largely
      superseded by plstring which gives access to many[!] more glyphs.)
      
         means try to
      just draw a point.  Right now it's just a move
      and a draw at the same place.  Not ideal, since a sufficiently
      intelligent output device may optimize it away, or there may be faster
      ways of doing it.  This is OK for now, though, and offers a 4X speedup
      over drawing a Hershey font "point" (which is actually diamond shaped
      and therefore takes 4 strokes to draw).  If 0 < code < 32, then
      a useful (but small subset) of Hershey symbols is plotted.  If 32
      <= code <= 127 the corresponding printable ASCII character is
      plotted.
    code=-1
      
n
          (PLINT
            Number of points in the
            
               and
            x
            
               vectors.
          y
            
x
          (PLFLT_VECTORA vector containing the x coordinates of points.
y
          (PLFLT_VECTORA vector containing the y coordinates of points.
code
          (PLINT
            Hershey symbol code (in "ascii-indexed" form with -1 <= code <=
            127) corresponding to a glyph to be plotted at each of the
            
               points.
          n
            
      Redacted form: plpoin(x, y, code)
    
This function is used in examples 1, 6, 14, and 29.