+The B<dashes> modifier enables dashed line style. Without any further options
+a symmetric dashed line with a segment length of 5 pixels will be drawn. The
+dash pattern can be changed if the B<dashes=> parameter is followed by either
+one value or an even number (1, 2, 4, 6, ...) of positive values. Each value
+provides the length of alternate I<on_s> and I<off_s> portions of the
+stroke. The B<dash-offset> parameter specifies an I<offset> into the pattern
+at which the stroke begins.
+