Cell > Cell Tags (Mathematica Menu Item)

Cell Tags opens a submenu for creating, removing, editing, and searching cell tags.

Format > Clear Formatting (Mathematica Menu Item)

Clear Formatting removes formatting from selected text or cells.

Cell > Grouping > Close Unselected Cells (Mathematica Menu Item)

Close Unselected Cells closes all groups but leaves selected cells open.

Evaluation > Default Kernel (Mathematica Menu Item)

Default Kernel specifies the default kernel for all calculations.

Format > Edit Stylesheet... (Mathematica Menu Item)

Edit Stylesheet edits the style definitions for the current notebook.

Edit > Extend Selection (Mathematica Menu Item)

Extend Selection highlights the smallest subexpression containing the selection.

Find Currently Evaluating Cell selects the cell bracket of the currently evaluating cell.

Palettes > Generate Notebook from ... (Mathematica Menu Item)

Generate Notebook from Palette converts a palette into an ordinary notebook.

Help > Give Feedback (Mathematica Menu Item)

Give Feedback opens the Wolfram Research feedback site.

Graphics > New Graphic (Mathematica Menu Item)

New Graphic inserts an empty graphics cell at the insertion point.