If you are going the ERT route, you might want to do the adjustments in a group
instead and make the changes in a way that is limited to the group---easy if
you use plain TeX. The lengths are plain TeX too... pure LaTeX users would
proably do this with a list environment. Remember to ensure the paragraphs you
want the margins to work on are terminated before you close the group. My ERT
would be along the lines of
{\leftskip=2cm\rightskip=2cm\advance\parindent by 2cm
<...text to be affected here...>
\par}
You can infact move several paragraphs around using a single ajustment to
\leftskip and \rightskip. Angus' suggestion is correct but arguably technically
inferior. In particular my version restores any previous non-standard \leftskip
or \rightskip in effect before the afjustment, for exmaple ragged right format
(\flushleft, which works by adjusting \rightskip).
--
Duncan (-:
"software industry, the: unique industry where selling substandard goods is
legal and you can charge extra for fixing the problems."
