Another workaround I have used is to add the URL to my 'To Do List'.
I have found if using Mozilla, the history works like a charm as well. I rarely if ever clear my history (ya never know when you will need that strange link you found weeks ago). Once I have found that tree again, I bookmark it and save it to a folder I had created specifically for 'tree links'.
You are correct - there should be a way in ACOM to do the same thing but alas.. :)
Not perfect, but it works for me. I would 'think' it would work on IE as well. It's been a while since I have used IE.