Optional Features

Some articles on optional features, optional:

Profile (engineering)
... Many complex technical specifications have many optional features, such that two conforming implementations may not inter-operate due to choosing different sets of optional features to ... Even when no formal optional features exist within a standard, vendors will often fail to implement (or fail to implement correctly) functionality from the ...
Mercedes-Benz GL-Class - First Generation (X164; 2007-2012) - Features - Optional Features
... Standard on the Mercedes GL550 but optional for the lower trims include a power tilt/telescopic wood/leather-wrapped steering wheel w/radio controls (replacing tilt/telescopic leather-wrapped steering wheel w/radi ...

Famous quotes containing the words features and/or optional:

    “These, then, will be some of the features of democracy ... it will be, in all likelihood, an agreeable, lawless, particolored commonwealth, dealing with all alike on a footing of equality, whether they be really equal or not.”
    —Plato (c. 427–347 B.C.)

    “Our father presents an optional set of rhythms and responses for us to connect to. As a second home base, he makes it safer to roam. With him as an ally—a love—it is safer, too, to show that we’re mad when we’re mad at our mother. We can hate and not be abandoned, hate and still love.”
    —Judith Viorst (20th century)