status embed scalebar not working

[kristjan]

Hello,

after upgrading to Mapserver4.8.4 my status=embed scalebars stopped working.

Searching the documentation about this problem I found that there is written:
---------
Please note that embedding scalebars require 
that you define a markerset. In essence the scalebar becomes a custom 
marker that is handled just like any other annotation.)

---------

what kind of markerset is it (I couldn't find any more references to it)? 
Does anybody have an example of the mapfile and markerset file where embed scalebar is working?


Scalebar definition from my map-file

SCALEBAR
    STATUS embed
    INTERVALS 3
    SIZE 150 3
    COLOR 0 0 0
    position lr
    TRANSPARENT OFF
    OUTLINECOLOR 0 0 0
    UNITS kilometers
    STYLE 1
    LABEL
      COLOR 0 0 0
      SIZE tiny
    END
END

thanks 
Kristjan