Link to external mainpage
===

I have made a Doxygen documentation, which itself references another documentation using the tag-file mechanism. But inside its mainpage I now would like to link to the mainpage of the external documentation. Of course, I can always specify the file directly:

    ... uses [OtherDoc](../../../OtherProject/doc/html/index.html) for ...

even more so since the projects are located relative to each other. But nevertheless I would like Doxygen to automate this process, since it needs to know the location of the external documentation, anyway.

So is there a way to somehow symbolically reference the external documentation's mainpage, something along the lines of:

    [OtherDoc](\ref OtherProject::mainpage)

or

    [OtherDoc](#OtherProject::mainpage)
