Any type of item put into the program can be linked to. This is a simple example, Banded Agate is linked in the description of Eye Agate.
This brings up a condensed Viewer that gives the majority of the information needed about that item.
If it had been a link to the Paladin Class, it would open a windows that looks like this. Description of all classes is currently blank, but will contain Class Skills and other information once I have Skills entered.
Links can be made to any type of item that is entered into the program.