I need to make a section of text in my document narrower, about .6666\textwidth.

Basically the text has normal alignment and everything, just instead of filling \textwidth, its compressed so there is a larger white space to the right.

I've tried dozens of things, but cannot get a good solution, every solution has strange other effects.

The best thing that has worked so far is

\setuplayout[width=3in]

But the problem with this solution is then I cannot get it to return to the original settings afterward.

--Joel