| backward compatible A system is backward compatible if it is with (e.g. can share data with) earlier versions of itself, or sometimes other earlier systems, particularly systems it intends to supplant. For example, 6.0 can read WordPerfect 5.1 files, so it is backward compatible. It can be said that is backward compatible with , because Perl was (among other things) intended to replace awk, and can, with a converter, run awk programs. See also: . Compare: . (1998-01-15) |