Question: How to get off the ground in Maple?

New user. Start a new "Worksheet Mode". Type "3" and press Enter. Maple evaluates it to 3. Decide I want to add a section-heading above the original first line. Head into the docs and emerge several hours later still not having found any way to add a section-heading above the original first line. How did I lose so many hours of time on something so basic? Where was this routine task documented?

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