[tex-eplain] Error

[Rodolfo Medina]

Philip Taylor <P.Taylor at Rhul.Ac.Uk> writes:

> I cannot compile your new example at all, Rodolfo :
>
>     ! Undefined control sequence. 
>
>     \@optionalusercs #1->\begingroup \def \extension 
>
>
> ** Phil.


I get the same.

Rodolfo