memory overlay

memory overlay

[′mem·rē ′ō·vər‚lā]
(computer science)
The efficient use of memory space by allowing for repeated use of the same areas of internal storage during the different stages of a program; for instance, when a subroutine is no longer required, another routine can replace all or part of it.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Consequently, data are always being moved into and out of memory overlays and disk storage, and performance diminishes due to the sluggishness of command processing, drawing generation, script interpretation, and other functions.