Am 17.05.2015 um 22:54 schrieb Troy Henderson :

I updated pstoedit, and it functions as expected.

This is not a MetaPost question but rather a ConTeXt question: How do I use Arev Bold (Sans) in ConTeXt?

Use the DejaVu fonts which are like Arev Sans a extended version of Bitsream Vera. \setupbodyfont[dejavu] \starttext \input knuth \ss\input knuth \startformula c^2 = a^2 + b^2 \stopformula \stoptext Wolfgang