User can answer to a question marked as duplicate
32138
How was this answer posted after this question was closed?
130688
Place a bounty to reward an answer on a duplicate (closed) question
126330
Wrong wording of close message when question is closed as duplicate of more than one
116288
How can I improve questions marked as duplicate?
78861
Why are there two separate boxes about duplicate questions?
78555
Double booked - User bookmarking question recorded twice
117258
Is it ok to to delete and repost a duplicate question?
10293
How should duplicate questions be handled?
59330
Mark an answer for a question from a deleted account
18509
Does the new guidance on duplicate questions suggest closing a question as duplicate, if the original answers the OP's question?
94817
Allow me to save an answer
31310
Dealing with quickly edited, copied answers?
18551
Duplicate questions in feed, and questions incorrectly marked as unanswered
112256
Should I still post an answer if I see several answers have already been posted while writing an answer or making a fiddle?
135386
Should bug-report/feature-request *questions* that duplicate Grab-bag *answers* be closed as duplicates?
64859
Is it acceptable to add a duplicate answer to several questions?
25926
Why can't I accept two answers for the same question?