[NTG-context] Trouble with this formula

21 Feb 2025

      Dear List,

I have a trouble with this formula, because, I would like to have c + d also in the matrix, but it is not working.

\starttext
\startformula
\startmathmatrix[fences=doublebar]
 \pmatrix
  { a  + b\NR}
   { c  + d \NR}
\stopmathmatrix
\stopformula
\stoptext

And another question too:

I would like to need the command \parallel, instead of the fences, how can I make them big?

Many thanks

Uschi

Ursula Hermann