1. A proprietary or restricted file format that is not openly documented, limiting access and editing capabilities to specific software
The document was saved in a closed format, making it difficult to open with alternative software.
O documento foi salvo em um formato fechado, dificultando sua abertura com software alternativo.
2. A standardized structure or layout that does not allow for modification or customization
The form uses a closed format that doesn't permit additional fields.
O formulário utiliza um formato fechado que não permite campos adicionais.