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| Subject | English | Vietnamese |
| comp., MS | main app | ứng dụng chính (The wider of the two apps that can appear on the screen simultaneously after a second app is snapped to the screen) |
| comp., MS | main document | tài liệu chính (In a mail-merge operation, the document that contains the text and graphics that are the same for each version of the merged document, for example, the return address or salutation in a form letter) |
| comp., MS | main form | biểu mẫu chính (A form that contains one or more subforms) |
| comp., MS | main window | cửa sổ chính (The window that contains the Contacts list) |