Display notification when the question you are answering is voted as dupe
31940
Add an alert when answering a question that has at least a close vote as duplicate
27856
Add the duplicate suggestion feature to mobile theme
77659
Prevent upvotes for duplicates, or carry upvotes to master question
155996
Auto-upvote comment during Low Quality review when selecting same reason
16630
Allow users to mark "accepted" answer on someone else's question?
3685
Confirming that my own question is a duplicate by voting to close should have immediate effect
97892
See question when answering
78376
Flag Answer, duplicate
35742
Duplicate notifications
147543
No notification for comment reply when using Dupe Hammer along with other close voters
29911
Duplicate (but slightly different) notification for yearling badge
86188
Get attention to a new answer to an old question
146244
Notification of a more popular answer than the accepted one
91474
Editing duplicate banner edited into the text of the question
112760
Bug when marking a question as duplicate
118077
Provide indicator that another user is editing a post
6891
Knowing the status of my question under reopen queue