Related Clues:

• End of a walkie-talkie transmission
• Put one ___
• Well briefed about
• Straddling, perhaps
• Not in the dark about
• Savvy about
• From whence you can look down on people
• Throughout
• Over and above
• Perched on
• Like stars
• In excess of
• Topping below
• ''Once --- a Mattress''
• Previously mentioned