When a document needs to be updated, the projectdoc Toolbox may decide to only mark the document as out-of-date and proceed with the current process. The update will be postponed to a later time when the updated version of the document is actually required. In typical use cases the updated document will immediately be read for rendering to the user who has updated the Confluence page. So this is usually a use case if the Confluence document was updated programmatically. The advantage of this process is that administrators may decide the point in time at which a larger set of invalid documents should be revalidated so that this process is not executed just-in-time when a user requests the projectdoc document. Administrators may have a look at the invalid flag on a projectdoc document to check the amount of invalid documents. | 
