Before 1.10 projectdoc relied on the 'projectdoc' label to mark pages that are projectdoc documents. With this version this visible tag is removed and replaced with a content property. The inner workings will then check the content property instead of the tag.

For migration we will always check the content property first and then the label to determine if a page is a projectdoc document. If the 'projectdoc' label is removed we will automatically add the content property.

This is a breaking change for those use cases that expect that projectdoc documents will have a 'projectdoc' label. For instance users who use the Content By Label Macro will not find new pages.

A side effect of this change is that pages with named doctypes, that is doctypes that are not based on a blueprint, will not have the name of the doctype as a label. This is - for instance - the case with docsections.

Users who do not use the 'projectdoc' label for their work will not notice the change. Users who do should be aware of the fact that this label is no longer added automatically.