Am 04.01.2009 um 18:26 schrieb Alan STONE:

\starttext

\setbox\scratchbox\hbox{\switchtobodyfont[38pt]Text In A Frame}

\the\htdp\scratchbox

\stoptext

From this example I conclude TeX does not do what you tell it to do.

I must be missing something... ?

What do you not understand in my example?