[pstricks] dotsize/linewidth connection

[John Frampton]

In drawing a dotted line with \psline in the arrows=(-) style, I
would like to decouple the size of the dots and the size of the
endmarks.  The size of the endmarks seems to be controlled by the
linewidth parameter.  So the problem is setting the dotsize
independently of the linewidth.  Reading the User's Guide (March
1993, p. 30) led me to believe that

\psline[linestyle=dotted,linewidth=1pt,dotsize=3pt 0]
   (0,0)(3,0)

would produce a dotted line with 3pt dots.  But it does not.
What am I missing?

Thanks,
John Frampton