Related Clues:

• ''Runs like ---'' (sales pitch for a used car)
• Resting upon
• Well-briefed about
• Versed in
• O
• At the apex
• Perched upon
• At the summit
• ''Once --- a time...''
• On top
• Well briefed about
• Straddling, perhaps
• Not in the dark about
• Savvy about
• From whence you can look down on people