Hello,

in the following example:

----
\setupheadertexts[Left][Right]

\starttext
Aaa

\page

\startsection[title={Sec}]
    \start
      \setupbodyfont[6pt]
      \dorecurse{12}{\input knuth}
    \stop
\stopsection
\stoptext
----

header text size on page #2 is small (6 pt) although body font change was intended only to text inside section "Sec" -
thus the text "\input knuth" is surrounded by \start ... \stop.

How to change the bodyfont size of the running text only (ad-hoc in the middle of the document), without changing header text size?