Yes it is possible. As far as I know, the only tools that do it are tools
that were formerly SGML tools. Check out Steve Pepper's "Whirlwind guide":
http://www.infotek.no/sgmltool/editetc.htm#cat-edit
Paul Prescod - http://itrc.uwaterloo.ca/~papresco
How many of the Congresspeople who voted for the CDA do you suppose
also voted to release the report that reads like a borderline por-
nographic dime-store romance written by a Texas preacher's son?
- Keith Dawson, TBTF
http://www.tbtf.com/archive/09-14-98.html
http://www.tbtf.com/resource/hypocrites.html