Forums:Understanding the definition of "Cleanup" tag

Tolkien Gateway > Forums > Understanding the definition of "Cleanup" tag

I was recently looking at pages that need improvement as defined by the {{cleanup}} tag and was surprised to see a few listed as unsatisfactory. One main example being Ithilien, which has been marked for cleanup since 2009, yet it has been drastically expanded since then and appears (to my novice eyes) as being entirely satisfactory now.

Is there a clear definition for the cleanup tag and what requires it?

How shall one know if a page has reach a stage where it is then acceptable to delete the tag?