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Definition of Retention line
1. Noun. (context: travel) A future-dated line of text put in to an airline reservation system or GDS to delay the booking being moved to archives. ¹
¹ Source: wiktionary.com
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1. Noun. (context: travel) A future-dated line of text put in to an airline reservation system or GDS to delay the booking being moved to archives. ¹
¹ Source: wiktionary.com