This forum supports Markdown formatting in posts.
Read more about Markdown here: https://assemble.io/docs/Cheatsheet-Markdown.html
This forum also supports BBCode, read more which tags are available here: https://s9etextformatter.readthedocs.io/Plugins/BBCodes/Custom_BBCode_syntax/

Note that you do not have to wrap url links in any BBcode or markdown, they will be converted to a clickable link automatically.

To post code in your message in a readable form for people, have a look at this post on how to: https://bit.du.se/d/11-attaching-code-in-your-message

You can also hide text with [blur]Like this[/blur], it then looks like:

Like this

You can also use spoilers, [spoiler="Secrets"]In here are hidden things![/spoiler] it then looks like this:

Secrets

In here are hidden things!

You can also do a step by step within your post.

Step 1

Create the first step by writing [accordion header=“Step 1″] followed by the text within the step. Close the step with [/accordion]

Step 2

Excaktly the same procedure as the first step!

Do you want to post a chat-like conversation with someone or similar? You can do that by using the Chat function

Me: Why did the chicken cross the road?

Mary: It was hungry?

Me: No! Wrong!

How you post the conversation above:
[chat-a="Why did the chicken cross the road?" who="Me"] [chat-b="It was hungry?" who="Mary"] [chat-a="No! Wrong!" who="Me"] [space][/space]

And you can even make tooltips in your messages!
Code for the tooltip above: [tooltip="Awesome, right?" placement="right"]tooltips[/tooltip]

This forum also supports the so-called fancypants formatting, read more about it here: https://s9etextformatter.readthedocs.io/Plugins/FancyPants/Synopsis/

You can also post mathematical equations!
Wrap the text in a [math]\[/math] block or [imath]\[/imath] block.

How does a math block look like?
[math]\int_{-\infty}^\infty\hat\xi\,e^{2\pi i\xi x}\,d\xi[/math]
Code within the math tags: int_{-\infty}^\infty\hat\xi\,e^{2\pi i\xi x}\,d\xi

And a imath block:
[imath]\varDelta = b^2-4ac[/imath]
Code within the imath tags: \varDelta = b^2-4ac