| 
            plptex3
          ( | wx , | 
| wy , | |
| wz , | |
| dx , | |
| dy , | |
| dz , | |
| sx , | |
| sy , | |
| sz , | |
| just , | |
| text ); | 
      Writes text at a specified position and inclination and with a
      specified shear within the viewport.  Text is clipped at the viewport
      boundaries.  The reference point of a string lies along a line passing
      through the string at half the height of a capital letter.  The
      position of the reference point along this line is determined by
      
        , and the reference
      point is placed at world coordinates
      just
      
        ( within the viewport. The
      inclination and shear of the string is specified in terms of
      differences of world coordinates making it easy to write text parallel
      to a line in a graph.
    wx, wy,
        wz)
      
wx
          (PLFLTx world coordinate of reference point of string.
wy
          (PLFLTy world coordinate of reference point of string.
wz
          (PLFLTz world coordinate of reference point of string.
dx
          (PLFLT
            Together with 
              , this specifies the inclination of
            the string.  The baseline of the string is parallel to a line
            joining dy and 
                dz
              
            
              ( to x, y,
              z)
            
              (.
          x+dx,
              y+dy,
              z+dz)
            
dy
          (PLFLT
            Together with 
              ,
            this specifies the inclination of the string.
          dx and
              dz
            
dz
          (PLFLT
            Together with 
              ,
            this specifies the inclination of the string.
          dx and
              dy
            
sx
          (PLFLT
            Together with 
              , this specifies the shear of
            the string.  The string is sheared so that the characters are
            vertically parallel to a line joining sy and 
                sz
              
            
              ( to x, y,
              z)
            
              (.
            If x+sx,
              y+sy,
              z+sz)
            
               then the text is not
            sheared.
          sx = sy
              = sz = 0.)
            
sy
          (PLFLT
            Together with 
              ,
            this specifies shear of the string.
          sx and
              sz
            
sz
          (PLFLT
            Together with 
              ,
            this specifies shear of the string.
          sx and
              sy
            
just
          (PLFLT
            Specifies the position of the string relative to its reference
            point.  If 
              ,
            the reference point is at the left and if
            just=0.
            
              , it is at the
            right of the string.  Other values of
            just=1.
            
               give
            intermediate justifications.
          just
            
text
          (PLCHAR_VECTORA UTF-8 character string to be written out.
      Redacted form: 
        plptex3(x, y, z, dx, dy, dz, sx, sy, sz,
        just, text)
      
    
This function is used in example 28.