Microsoft® Manual of Style, Fourth Edition

M

M, M byte, Mbyte

Do not use as abbreviations for megabyte. Use MB instead. See also MB.

Mac, Macintosh

According to the Apple publications style guide, Mac is the preferred term to describe Apple products, but Macintosh may also be used. When you use Mac as an adjective or as a noun, always precede it with an article or a possessive pronoun. For example, say the Mac computer or your Mac. Don’t make Mac or Macintosh plural or possessive.

Network language for the Macintosh differs from that of other personal computers. Use the terms zone, file server, and shared disk to refer to what users select to get information shared on a network. Use colons with no spaces to separate zones, file servers, shared disks, folders, and file names. File names have ...