We have a few types of formatting code:
Italics: word

*word* or _word_

Bold: word

**word** or __word__

Bold & Italic: word

**_word_**


Line break:

[br/]


Size: (Changes the size of the word).

[size=4]word[/size]


Link: 

[caption](url)

You can use this in the custom welcome message, Announcements, Q&A (both comments and questions), Poll Questions and Answers, and Survey divider text box.
You can NOT use markdown in the Poll footer.

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