DVD±R

DVD±R is not a separate DVD format. Rather, it is a term for a DVD drive that can accept both of the recordable DVD formats, DVD-R and DVD+R. Likewise, DVD±RW (also written as DVD±R/W, DVD±R/RW, DVD±R/±RW, DVD+/-RW and other arbitrary ways) handles both DVD-RW and DVD+RW discs (but not usually DVD-RAM).