Documentation improvements

Put your documentation nodes that need improvement here.

Format: Numbered list with the following parts.

1. Name of command (what you would type viewHelp to see)
2. Url on the Macaulay2 website for the help node.
3. What the problem is (both the literal "there is no help for command X" and more generally if it was too advanced for a new-to-M2 person, or examples missing, or seeAlso links missing).
4. What your suggestion is on how to fix it. Suggested sentences/paragraphs/M2 examples/links to add are great here!

Add your github username if you're happy to be contacted about this suggestion.