Related Clues:

• Au courant
• Current with
• Abreast of
• Like some modems
• ''... --- a midnight dreary''
• '___ the Roof' (Drifters hit)
• Well-briefed about
• Versed in
• ''Once --- a time...''
• On top
• Well briefed about
• Not in the dark about
• Savvy about
• ''Once --- a Mattress''
• "--- futher review..."