🚀 go-pugleaf

Is there a way to produce revision bars in LaTeX?

I have worked with another text processor which had a system like the following.

.rbar on
This text is marked by a vertical bar in the right hand margin.  This is some filler
text which takes up some space in order to show how wrapped lines are handled.
.rbar off
This text is not marked by a vertical bar in the right hand margin.  Some more filler
text which takes up some more space in order to show where the revision bars stop.

The output text should look like:

    This text is  marked by a vertical bar in  the right  hand margin.    |
    This is  some filler  text  which takes up  some space in order to    |
    show how wrapped lines  are handled.  This text is not marked by a    |
    vertical  bar in  the  right  hand  margin.  Some more filler text
    which takes up some more space in order to show where the revision
    bars stop.

Note that ALL lines containing revised text (as indicated by the .rbar on/off pair)
are marked, even if (as in this case) a line ends up being marked when it actually
contains unmodified text.

Is there an equivalent mechanism in LaTeX, or lacking that, is there some method to
create such a mechanism? Thanks in advance for any information,

    Phil Miller
    {...}!tektronix!omepd!iwarp!pcm