This function is going to be included in the first release of 4.1.x.
- In the normal "Wiki Content Integration Locations" setting, "XFRM Resources" must be turned on.
- In the XFRM admin page for Resource Fields, create a new field (name it whatever you want). You will see a new "Field Type" for "Wiki page as a tab"; the "Display Location" must be "Its Own Tab".
- Edit the appropriate XFRM Categories and add the field to the category.
- When creating/editing a resource, the field will show the familiar Javascript page-chooser.
- If a page is selected, it will appear as a tab.
With this approach, you can have multiple/different wiki-tabs per resource (such as a product page, a documentation page, or just related information), or different kinds of wiki-tabs for different XFRM categories.
Of course, normal non-tab integrations are also possible for categories and resources, but they don't rely on resource-fields.
This is not complete yet as it still needs more work on XF2, but the XF1 version seems to be working well.