1. Features or attributes that are not required but can be chosen or included at the discretion of the user or system
The software offers many optional characteristics such as dark mode and custom themes.
O software oferece muitas características opcionais, como modo escuro e temas personalizados.
2. Attributes in design, specification, or configuration that are not mandatory for basic functionality
The optional characteristics of this vehicle include leather seats and a sunroof.
As características opcionais deste veículo incluem bancos de couro e teto solar.