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diff --git a/doc/user/discussions/index.md b/doc/user/discussions/index.md
index efea99eb120..2206b2860f4 100644
--- a/doc/user/discussions/index.md
+++ b/doc/user/discussions/index.md
@@ -153,12 +153,82 @@ comments in greater detail.
 
 ![Discussion comment](img/discussion_comment.png)
 
+## Image discussions
+
+> [Introduced][ce-14061] in GitLab 10.1.
+
+Sometimes a discussion is revolved around an image. With image discussions,
+you can easily target a specific coordinate of an image and start a discussion
+around it. Image discussions are available in merge requests and commit detail views.
+
+To start an image discussion, hover your mouse over the image. Your mouse pointer
+should convert into an icon, indicating that the image is available for commenting.
+Simply click anywhere on the image to create a new discussion.
+
+![Start image discussion](img/start_image_discussion.gif)
+
+After you click on the image, a comment form will be displayed that would be the start
+of your discussion. Once you save your comment, you will see a new badge displayed on
+top of your image. This badge represents your discussion.
+
+>**Note:**
+This discussion badge is typically associated with a number that is only used as a visual
+reference for each discussion. In the merge request discussion tab,
+this badge will be indicated with a comment icon since each discussion will render a new
+image section.
+
+Image discussions also work on diffs that replace an existing image. In this diff view
+mode, you can toggle the different view modes and still see the discussion point badges.
+
+| 2-up | Swipe | Onion Skin |
+| :-----------: | :----------: | :----------: |
+| ![2-up view](img/two_up_view.png) | ![swipe view](img/swipe_view.png) | ![onion skin view](img/onion_skin_view.png) |
+
+Image discussions also work well with resolvable discussions. Resolved discussions
+on diffs (not on the merge request discussion tab) will appear collapsed on page
+load and will have a corresponding badge counter to match the counter on the image.
+
+![Image resolved discussion](img/image_resolved_discussion.png)
+
+## Lock discussions
+
+> [Introduced][ce-14531] in GitLab 10.1.
+
+For large projects with many contributors, it may be useful to stop discussions
+in issues or merge requests in these scenarios:
+
+- The project maintainer has already resolved the discussion and it is not helpful
+for continued feedback. The project maintainer has already directed new conversation
+to newer issues or merge requests.
+- The people participating in the discussion are trolling, abusive, or otherwise
+being unproductive.
+
+In these cases, a user with Master permissions or higher in the project can lock (and unlock)
+an issue or a merge request, using the "Lock" section in the sidebar:
+
+| Unlock | Lock |
+| :-----------: | :----------: |
+| ![Turn off discussion lock](img/turn_off_lock.png) | ![Turn on discussion lock](img/turn_on_lock.png) |
+
+System notes indicate locking and unlocking.
+
+![Discussion lock system notes](img/discussion_lock_system_notes.png)
+
+In a locked issue or merge request, only team members can add new comments and
+edit existing comments. Non-team members are restricted from adding or editing comments.
+
+| Team member | Non-team member |
+| :-----------: | :----------: |
+| ![Comment form member](img/lock_form_member.png) | ![Comment form non-member](img/lock_form_non_member.png) |
+
 [ce-5022]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5022
 [ce-7125]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7125
 [ce-7527]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7527
 [ce-7180]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7180
 [ce-8266]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8266
 [ce-14053]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/14053
+[ce-14061]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/14061
+[ce-14531]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/14531
 [resolve-discussion-button]: img/resolve_discussion_button.png
 [resolve-comment-button]: img/resolve_comment_button.png
 [discussion-view]: img/discussion_view.png