Graphics > Drawing Tools (Mathematica Menu Item)

Drawing Tools opens the 2D Drawing Tools palette.

Cell > Show Expression (Mathematica Menu Item)

Show Expression toggles between the expression and display forms of a cell.

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

Show Page Breaks calculates and displays page breaks on screen.

Window > Show Ruler (Mathematica Menu Item)

Show Ruler toggles ruler display along the top of a notebook.

Show Stack Window toggles the display of the evaluation stack window on or off.

Window > Show Toolbar (Mathematica Menu Item)

Show Toolbar toggles toolbar display along the top of a notebook.

Format > Size (Mathematica Menu Item)

Size assigns a point size to selected cells or text.

File > New > Slide Show (Mathematica Menu Item)

Slide Show creates a new slide show notebook.

[Right-click] > Speak Selection (Mathematica Menu Item)

Speak Selection speaks the contents of a single selected cell.

Insert > Special Character… (Mathematica Menu Item)

Special Character opens the Special Characters palette.