Edit > Make Template (Mathematica Menu Item)

Make Template inserts a template based on a selected function name.

Cell > Grouping > Open/Close Group (Mathematica Menu Item)

Open/Close Group toggles a cell group between open and closed. Closing a group collapses all cells in the group so that only the head cell is visible.

File > Open... (Mathematica Menu Item)

Open opens a dialog box for opening an existing file.

Format > Option Inspector... (Mathematica Menu Item)

Option Inspector view and set all option values for cells, notebooks, and global preferences.

Insert > Page Break (Mathematica Menu Item)

Page Break inserts a page break at the horizontal I-beam.

File > Printing Settings > Printing ... (Mathematica Menu Item)

Printing Options sets options for printing a notebook. Mathematica saves these settings with the notebook.

Evaluation > Remove From Evaluation ... (Mathematica Menu Item)

Remove From Evaluation Queue cancels the pending evaluation of a cell.

Graphics > Rendering > Rerender Graphics (Mathematica Menu Item)

Rerender Graphics rerenders the selected graphics.

File > Send To... (Mathematica Menu Item)

Send To launches your email application to email a notebook (Windows only).

File > Printing Settings > Show Page ... (Mathematica Menu Item)

Show Page Breaks calculates and displays page breaks on screen.