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Use "nag-screen" in a sentence
"· The "Buy Me" nag-screen will not disturb you any longer"
"It shouldn't be rated as "Freeware" with that ugly nag-screen. ajua"
"You can make screensavers for sale using special features for shareware authors - registration keys (single and per-customer), functionality limitations (image count, trial period), customizable nag-screen, readme information file and license agreement."