https://stackoverflow.com/questions/4823468/comments-in-markdown

1. link方式

2. html方式

3. css方式

We do NOT support comments

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### 1. link方式

[//]: # "Comment"

[//]: # (Comment)

[comment]: <> (This is a comment, it will not be included)
[comment]: <> (in  the output file unless you use it in)
[comment]: <> (a reference style link.)

[//]: <> (This is also a comment.)


[^_^]:
1

[>_<]:
2

[>_>]:
3

### 2. html方式

<!-- This is the right way to write markdown comment -->

<!---
your comment goes here
and here
-->



### 3. css方式

We do <span style="display: none; ">NOT</span> support comments