So to confirm, I can edit the code after ppt is saved as a webpage but cannot
save it within the ppt version. This means that as the ppt version it is
edited then resaved as a webpage I will need to reedit the link?
That's right.
As well, I assume I can edit any links with any html?
Once it's in html format it's just text files, so even Notepad will let you edit
the things. Making *sense* of them ... now that's another story. The HTML is
quite complex.
fyi: I am experimenting with uploading content to lessons in an LMS and
allowing others providing content to use ppt or Word for simplicity.
Given that, and the fact that you want to open links in a new window, you might
want to have a look at our commercial addin, PPT2HTML. It lets you do this
quite easily and you may find that the HTML is more LMS-friendly than
Powerpoint's own variety.
http://ppt2html.pptools.com - there's a fully
functional demo available.