[texhax] writing vertical bar in margin

[Philip Taylor (Webmaster, Ret'd)]

K S A Al-Ghafri wrote:

 > I could not write a vertical text in the edge of paper (margin) like in the
 > attached file.

Understood.  Unfortunately in your earlier message
you wrote "vertical text like a bar", which I interpreted
too literally.  I know how to write a bar in the margin,
but writing rotated text is beyond my current abilities.

** Phil.
--------

 >> K S A Al-Ghafri wrote:
 >>
 >>> How can I write vertical text like a bar in the margin in every page?
 >>
 >> Hook into \shipout and wrap a box containing said bar
 >> around each page box.