Wanted: A New Copyediting Mark

I just realized that corporate blogs will almost always be edited. They will likely be edited by hand on paper until collaborative tools catch up to the blogosphere. No revelations there.
The radical part is that this will require someone to make up a new copyediting mark that denotes that a selected portion of the text should have a hyperlink (or not).
Does anyone have any suggestions?
Joanna (our intrepid PR Director) suggests "---> h:www.sample.link" (with the "h" being underlined) Not sure about including the http. Offline editing doesn't lend itself to easy link research. We could call it the "underscore-h"