| Subject | Welsh | English |
| comp., MS | cyfeiriad modd cylchu | loopback address (The address of the local computer used for routing outgoing packets back to the source computer. This address is used primarily for testing) |
| comp., MS | dim modd danfon | undeliverable (Not able to be delivered to an intended recipient. If an e-mail message is undeliverable, it is returned to the sender with information added by the mail server explaining the problem; for example, the e-mail address may be incorrect, or the recipient's mailbox may be full) |
| comp., MS | dosrannwr modd diogel | safe mode parser (An application that parses code and markup in a page to help ensure that only trusted code and markup is run on a computer, server farm, or server cluster) |
| comp., MS | eitem does dim modd ei chwilio | unsearchable item (An item that can't be indexed for a mailbox search using Multi-Mailbox Search. This includes unrecognized message types and messages that contain attachments that are encrypted or have an unrecognized format) |
| comp., MS | modd cydnawsedd | compatibility mode (A feature of a computer or operating system that allows it to run programs written for a different system) |
| comp., MS | modd cysgu | sleep mode (A power-saving state that allows the computer to quickly resume full-power operation (typically within several seconds) when you want to start working again. All open documents and programs are saved to memory before the computer enters the low-power state) |
| comp., MS | Modd darllen | Read mode (A mode that is optimized for reading or viewing content and does not support edit functionality) |
| comp., MS | modd dilysu | authentication method (The authentication protocol (such as CHAP, PAP, EAP etc) used when authenticating access to resources on a network) |
| comp., MS | modd dylunio | design mode (The InfoPath design environment in which you can create or modify a form template) |
| comp., MS | Modd golygu | Edit mode (A mode that provides full functionality for creating or editing a file) |
| comp., MS | modd gwelededd | visibility mode (A mode in which SharePoint Server is the primary source for all the project details. Project Server scheduling, time and status, and advanced functionality are disabled) |
| comp., MS | modd heb gysylltu | offline mode (The state in which users fill out forms when working offline) |
| comp., MS | modd sgrin lawn | full-screen mode (A display mode that shows as much content as possible by hiding elements such as navigation and toolbars) |
| comp., MS | Modd snap | Snap mode (Reduced screen mode in Bing apps. Not in use in UI yet, but it could appear in UI or UA messages eventually) |
| comp., MS | Modd stereo sawl-sianel | Headphone Virtualization mode (An audio effect setting that allows users with stereo headphones to experience stereo and multi-channel content without the need to set up an extensive multi-channel speaker system) |
| comp., MS | Modd Storfa Exchange | Cached Exchange Mode (A feature that lets a Microsoft Outlook user who has a Microsoft Exchange e-mail account work offline, either by choice or due to a connection problem. A copy of the user's mailbox is stored on their computer and is frequently updated from the mail server. Any changes that are made while a connection to the server is not available are synchronized automatically when a connection becomes available) |
| comp., MS | Modd Symud i Gylchfa Amser Barhaol | Permanent Time Zone Move Mode (A menu item which enables the user to permanently move a calendar to a different time zone) |
| comp., MS | modd tremio | panning mode (A mode that enables the user to move a document by dragging it. Panning mode is available when a Word document is displayed on a preview pane) |
| comp., MS | modd trosdeipio | overtype mode (A setting in which existing characters are replaced with newly typed characters) |
| comp., MS | modd trosglwyddo anghydamserol | asynchronous transfer mode (A high-speed, connection-oriented, virtual circuit-based packet switching protocol used to transport many different types of network traffic. ATM packages data in 53-byte, fixed-length cells that can be switched quickly between logical connections on a network) |
| comp., MS | nodwedd does dim modd delio â hi | unsupported feature (A feature that is inactive in Office Web Apps, but that is present when the content is opened in the rich client) |
| comp., MS | priodwedd wedi'i rheoli mae modd ei chwilio | searchable managed property (A managed property whose value can be returned by a query) |
| comp., MS | priodwedd wedi'i rheoli mae modd ei hadfer | retrievable managed property (A managed property that can be displayed in search results) |
| comp., MS | priodwedd wedi'i rheoli mae modd ei hymholi | queryable managed property (A managed property that can be queried against. The query must contain the managed property field name, either in the query itself or programmatically) |
| comp., MS | priodwedd wedi'i rheoli mae modd ei mireinio | refinable managed property (A managed property that can be used as the basis for a refiner for search results) |
| comp., MS | priodwedd wedi'i rheoli mae modd ei threfnu | sortable managed property (A managed property whose result set can be sorted based on the property before the result set is returned) |