on file

on file idiom
In or as if in a record for easy reference. For example, There's no job open right now, but we'll keep your résumé on file. The use of file in the sense of “a collection of papers stored for ready reference” dates from the early 1600s.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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