You can insert a comment in a cell by pressing Shift - F2. Using validation, you can have a message pop up telling the user what they can enter into a cell.
The Sort feature.
Rule Manager
Toggle button
the publish option
No. That is a feature of Microsoft Word tables, but not Excel. There are specific options for inserting rows and columns in Excel.
Convert Tet to Columns
auto-correct
thesaurus
scale to fit
scale to fit
Filter and its associated command Autofilter.
A REF error message is a message that is used in the Windows Excel program, part of the Office package, in that there is an error input or output in an excel cell data pack.