[pstricks] Drawing a Vertical Line

[Aaron Carass]

I am trying to finish up preparing a book and I want to add a line to my example environment.
Things currently look like this in TeX:
   \begin{example}[Rose model]
      .
      . 
      .
   \end{example}

And appears like this in the text of the book like:
   Example 2.3    Rose Model
                  . . .
                  . . .

I want it to appear as:
   Example 2.3    Rose Model
       |          . . .
       |          . . .

This should be easy, but I just can't seem to make anything work. Having spent the better part of a day playing with this, I am about to throw myself off a bridge! 

A modified \psframebox (or even \fbox) can't work because of page breaks, so a modification to \\ seems like a good idea but isn't cutting the mustard.

Thanks,
Aaron

-- 
Aaron Carass
Image Analysis and Communications Laboratory
Johns Hopkins University