RULER/RIBBON ICON
                                     ═══════════↕
                     Ruler/Ribbon icon ─────┐   ═
                                            └──►┴
Click the ruler/ribbon icon with the left       ↑
mouse button to turn the ruler on or off.       █
Click the ruler/ribbon icon with the right      ▒
mouse button to turn the ribbon on or off.      ▒
 
Use the ruler to set and move tabs, change
indents, and apply leader characters.
 
Use the ribbon to change styles, fonts, font size,
and character formatting.