It is (very) limited to few words only to reproduce how an old Bible I am trying to typeset  (words added in the text to ease the understand were printed in smaller size).

Thanks a lot
Regards

Joseph

From: Alan BRASLAU
Sent: ‎Monday‎, ‎June‎ ‎13‎, ‎2016 ‎5‎:‎19‎ ‎AM
To: josephcanedo@gmail.com
Cc: ntg-context@ntg.nl

On Sun, 12 Jun 2016 16:57:26 +0000
<josephcanedo@gmail.com> wrote:

> I was also a bit surprised with \tf<size> behaviour when used inside
> a scope of another one leading to 2 different sizes in output, as in
>
> {\tfd Foo {\tfx Bar1}} {\tfx Bar2} Baz.
>
> For the sake of knowledge I would be interested in knowing if this is
> expected eventually.

Yes, and this appears to me to be the most logical behavior.

By the way, the use of such "low-level" font changes is not very good
style in any case, and should be limited to special cases. In
particular, this will not export well in tagged output to xml, for
example, which is why I suggest the use of styles and "highlight".

Alan