(PHP 5 <= 5.3.0, PECL ming SVN)
SWFShape::drawLine — Draws a line (relative)
$dx
   , float $dy
   )This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk.
   swfshape::drawline() draws a line (using the current line style
   set by swfshape::setline()) from the current pen position to 
   displacement (dx,dy).
  
No value is returned.