1. A required or compulsory subject, topic, or design element that must be included or addressed in a particular context, such as in education, competitions, or creative work.
The mandatory theme for this year's art competition is 'Climate Change and Nature.'
O tema obrigatório para o concurso de arte deste ano é 'Mudanças Climáticas e Natureza'.
2. In software or computing, a required visual or functional design pattern that must be implemented across an application or system.
The mandatory theme enforces consistent branding across all user interface elements.
O tema obrigatório garante a consistência da marca em todos os elementos da interface do usuário.