The writer of that Help/How-to page wrote the text in HTML. When you enter a post here you don't use HTML -- you use ordinary text OR text marked up with BBCode OR mathematical stuff marked up with LaTeX script.
/QUOTE/QUOTEWhat does "text marked up with"?
https://www.physicsforums.com/threads/delimiting-your-latex-code.912721/#post-5753717
Thank you.
A "mark up language" annotates the text to show how it is to be printed or displayed. For example, text that is displayed like this: color bold italics bulleted list 1 2 3 4 Comes from the marked-up version like this: <p><span style="color: #ff0000;">color</span> <strong>bold</strong> <em>italics</em></p> <p>bulleted list</p> <ul> <li>1</li> <li>2</li> <li>3</li> <li>4</li> </ul>
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A "mark up language" annotates the text to show how it is to be printed or displayed.
For example, text that is displayed like this:
color bold italics
bulleted list
Comes from the marked-up version like this:
<p><span style="color: #ff0000;">color</s