[texhax] plain TeX: `No room for a new \fam'

[Rodolfo Medina]

"Donald Arseneau" <asnd at triumf.ca> writes:

> On Sun, July 7, 2013 10:33 am, Rodolfo Medina wrote:
>
>> I'm a plain TeX user, and have already loaded 16 \newfamS.  Is there any
>> way to get round TeX's complain?  To, say, create room for another
>> 16 families?
>
> The way to "get round" it is to assign some dynamically, locally
> within the math, rather than globally.


Please, how?

Thanks,

Rodolfo