Rik Kabel

20. November 2016 um 17:49

Okay.

What is the scope of local use?

It’s used to change the width of a \vbox.

\starttext

\ruledvbox\bgroup
    \input ward
\egroup

\ruledvbox\bgroup
    \hsize.5\textwidth
    \input ward
\egroup

\stoptext

It is different from grouping (as demonstrated by placing the middle two lines above in braces).

Which example?

Wolfgang