I am reviewing my previous messages. As the concepts in this subject are
a subtle matter, I would like to say that when I wrote, in my first message
\fam:enc \fam:size
I meant \font:enc, \font:size,
and also, in my latest message, where
\cmr/shape \cmr/width \cmr/axis
it should better be \cmr:shape, etc.
Javier A.