In the TiKz-Manual it says:
... that LaTeX has two commands called \thinlines and \thicklines and that \thinlines gives the line width of “normal” lines, more precisely, of the thickness that, say, the stem of a letter like “T” or “i” has.
Is there a similar command in ConTeXt to get the stem width of i,T of a font? I would like to have a consistent line width in my MetaPost drawings and the used font.