= R =
raw mode n.
A mode that allows a program to transfer
bits directly to or from an I/O device (or, under bogus
operating systems that make a distinction, a disk file) without any
processing, abstraction, or interpretation by the operating system.
Compare rare mode, cooked mode. This is techspeak under
Unix, jargon elsewhere.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.