[NTG-context] Font sizes.

Hi, I have 2 questions: 1. When you say something like : \definebodyfont[10pt][rm][tfe=lbr at 36pt] Do i have to provide the 36pts font files at first and install them or does context adapt a font file with another size to the 36pt size ? 2. I have installed a font which i got with a .pfb and a .afm file. When i make the following calls: \pdfmapfile{+texnansi-rubicon-karatmedium.map} \font\Myfont=texnansi-raw-KAMN \setupbodyfont[Myfont] \starttext This is roman, {\bf bold}, {\it italic}, {\bi bold-italic}, {\tfa bigger} and {\tfx smaller}. \stoptext Which size is going to be displayed ? Thanks. Dirar.