Only one per document |
As many as required |
Tightly bound to the document |
Attached to a document or fragment, or can be general, but they are movable |
Status reflects document lifecycle |
Status reflects an action to be undertaken |
Only assignee is notified by default |
All authors and assignees notified by default |
Incrementally updated by a stage |
Has the flexibility of comments – to edit, archive, move |
Location is fixed |
Can be moved to a different document |
Use workflow labels |
Use comment labels |