Question: the post comments

Can you guys explain me the steps to put the commands, formulas in the post comments. I can not find the form that they are legible.

I tried with:

Maple Tag
Writing in Word and use: Paste from Word.
Exporting the Web worksheet, then copy and paste.
Do not just find a way to let me
comment on the way that a lot of you do.
 
Gracias
Hermes
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