In The W3C Recommendation Track there is a nice diagram which clearly shows the steps from (FP)WD through CR with some CRD and then PR and Rec.

There is a single arrow to Rec, which from the diagram is clearly an end state with no further options. This is false because:

• updated Rec with editorial changes
• updated Rec with candidate corrections
• updated Rec with candidate additions
• updated Rec with proposed corrections
• updated Rec with proposed additions
• updated Rec where the proposed changes have been folded in

are all possible.

To avoid clutter, I suggest a second diagram entitled "Rec maintenance" which shows these steps (and adds the option to go back to CR, or to go back to FPWD for a new version if the previous version did not allow additions.