[XeTeX] Change fonts for different environment/commands

[Philip Taylor (Webmaster, Ret'd)]

Joachim Trinkwitz wrote:

>Even while KOMA-Script actually *has* sans serif headings as a standard, I most
> often switch to serif heading

But why ?  What exactly do you dislike about the use of
sans serif for headings ?  To my mind, and in a scientific
as opposed to artistic context, sans serif headings with
serif prose seem absolutely normal and fine.

Philip Taylor