# [NTG-context] Why do size changes affect my math font?

Brooks Moses bmoses at stanford.edu
Mon Aug 15 09:09:21 CEST 2005

Consider the following simple document, with is a minimalist version of the
slides that I'm currently working on:

\starttext
The variables are $u$ and $p$.
\stoptext

This works fine; the text is in roman and the math in italics, just as I
desire.  However, I need a larger font for my slides, and thus I'm also
using a font size command, like so:

\starttext
\tfc
The variables are $u$ and $p$.
\stoptext

This causes the math to be in roman instead of italic.  (It's not in "text
font" per se; an \it after the \tfc will italicise the text but not the
math, creating a quite odd effect.)

Is there a reason for this?  What's the cleanest way to fix it for all the
various size commands?

Thanks,
- Brooks