| Subject | English | Portuguese |
| commun., IT | multiple document interface | interface de documentos múltiplos |
| comp., MS, Braz. | multiple-document interface | interface MDI (A specification according to which documents are opened into windows (sometimes called child windows) that are constrained to a single primary (parent) window) |
| comp., MS, Braz. | single-document interface A specification according to which each open document occupies its own window in the UI, though only a single instance of the program application is running | interface SDI (single-document interface) |