Related Clues:

• GNP, for one
• Urgent notation
• Word heard on ''ER''
• Sports-card datum
• ESPN no.
• Baseball-card number
• PDQ's kin
• ''At once!''
• Without dawdling, in memos
• Rush job acronym
• R.B.I. or H.R.
• Acronym for right away
• 'The sooner the better!'
• Rebounds or assists
• Abbr. on an urgent message