[metapost] Why I can't see the text

[Troy Henderson]

>     I've just typed in a simple metapost file, for example test.mp:
>
>  beginfig(1);
>     dotlabel.lft(btex $O$ etex, (10cm, 10cm));
>  endfig;
>  end;

I believe this is because your fonts aren't being embedded into your
EPS file.  Try placing

prologues:=3;

before your beginfig(1);

Troy Henderson