Hi Hans and Wolfgang,

I'm just trying to make some illustrations about the Chinese typesetting
features. So I choose the way which is described in Chapter 5 of the metafun
manual. And I wanna draw a line from the text I wanna comment on to the
marginal notes which my comments lay on.

To highlight them, I drew an underline below the contexts which is to be
commented
and put a square around the comments. Everything is under control except
I put \fpos and \tpos around the comments, the framed box is not exactly
what
I want. It seems that metafun still thought it's in the main text so it drew
the bounding
around the body.

I found the mpos:par was defined in core-pgr.tex and it used show_par or
draw_par which
are defined in mp-core.mp. I don't think it's a good way to define another
MPpositiongraphic
called like mpos:marginpar to match my case. Do you think it's possible to
change
some of the core codes to make metafun recognize where she is.


-- 
Best Regards
Chen
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         Zhi-chu Chen | Shanghai Synchrotron Radiation Facility
        No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China
            tel: 086 21 5955 3405 | zhichu.chen.googlepages.com
                                              | www.sinap.ac.cn
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