+R, +RW, -R, -RW?

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November 28, 2006 7:27am CST
what is the difference between above? for what purpose we use +r and for what purpose we use +Rw like this other two
2 responses
@abagslife (1214)
• Italy
28 Nov 06
CD or DVD?
@oly2006 (947)
• Romania
28 Nov 06
in math, info or what?