6959.md

```
% pandoc -t docx -o - | pandoc -f docx -t markdown --track-changes=all
[This is the comment]{.comment-start id="1" author="Mike"
date="2020-12-17T16:53:00Z"} [Here is my reply]{.comment-start id="2"
author="Mike" date="2020-12-17T17:39:00Z"} This is the content being
commented on [[]{.comment-end id="2"}]{.comment-end id="1"}
^D
[This is the comment]{.comment-start id="1" author="Mike"
date="2020-12-17T16:53:00Z"} [Here is my reply]{.comment-start id="2"
author="Mike" date="2020-12-17T17:39:00Z"} This is the content being
commented on [[]{.comment-end id="2"}]{.comment-end id="1"}
```