Object-oriented.
A term specifying that a piece of software is composed of objects, which are self-contained modules that contain both data and procedures that act on the data.
Open Transport.
Open Transport is Apple’s networking software for Mac OS computers. The components of Open Transport include the TCP/IP and AppleTalk control panels, which serve, respectively, as replacements for the MacTCP and Network control panels used in classic networking. Open Transport is faster and more stable than classic networking, but it doesn’t work with some older software. Open Transport allows you to set multiple TCP/IP and AppleTalk settings for your computer without requiring you to reboot when switching between them.
Operating system (OS).
The core program that manages the resources of a computer, for example; the input/output devices, the memory, and the storage and retrieval of files.
Opt in.
Typically used in e-marketing programs and offerings, to take an action to “agree” to receive promotional e-mails when registering on a particular website from the site owner and other companies to whom he or she may rent your e-mail address to.
Opt out.
Typically used in e-marketing programs and offerings, to take an action to “decline” to receive promotional e-mails when registering on a particular website from the site owner and other companies to whom he or she may rent your e-mail address to.