Hi Christian,
see section 7.2.1 on http://marcocorvi.altervista.org/caving/tbe/m_07/m_072.htm
there you find:

The size of the fonts can be set with a simple MetaPost command,

  layout fontsize
    code metapost
      fontsetup( 6, 8, 10, 12, 16 );
    endcode
  endlayout

The five specified sizes are referred to as tiny, small, normal, large, and huge. The normal size is used for labels ("label" point and line). The small one for remarks ("remark" point). The -scale option overrides the default size.

The actual font sizes used depends on the scale of the output map:

1:100 and larger: 8,10,12,16,24
from 1:200 to 1:100: 7,8,10,12,14
from 1:500 to 1:200: 6,7,8,10,14
smaller than 1:500: 5,6,7,8,10

Regards
Wolfgang

Am 09.04.2013 22:00, schrieb Jackson:

Hi,

is it possible to use a smaller font size for the
station-name?
I know to use -scale xs for the station-name. It
is not small enough and I want to change this global.

So i tried using the "def fonts_setup" but nothing
happens

write "\def\thstationname{\size[4]}" to "mptexpre.tex";

Under debug mode -d i can find this saved in mptexpre.tex
But no change in the output pdf


    Glück tief
    Christian