| Subject | English | Welsh |
| comp., MS | alert box | blwch rhybudd (An on-screen box, in a graphical user interface, that is used to deliver a message or warning) |
| comp., MS | bounding box | blwch terfyn (The smallest rectangle that can enclose the text in a text frame) |
| comp., MS | check box | blwch ticio (" A control that indicates whether or not an option is selected. A check mark or "x" appears in the box when the option is selected.") |
| comp., MS | color box | blwch lliwiau (A set of color choices located in a workpane) |
| comp., MS | combo box | blwch cyfun (A standard Windows control that combines text box and list box functions) |
| comp., MS | combo box control | blwch cyfun rheoli (A standard Windows control that combines text box and list box functions) |
| comp., MS | confirmation dialog box | blwch deialog cadarnhau (A dialog box in which a user confirms that he or she wants a specified action to occur, usually by clicking OK) |
| comp., MS | custom dialog box | blwch deialog personol (A modal pop-up form you create to ask the user for additional information or to display a message) |
| comp., MS | dialog box | blwch deialog (A secondary window that allows users to perform a command, asks users a question, or provides users with information or progress feedback) |
| comp., MS | Dialog Box Launcher | Lansiwr Blwch Deialog (A specific Office icon that is used within a group to launch a related dialog box) |
| comp., MS | drop-down combo box | cwympflwch cyfun (A standard Windows control that combines the characteristics of a text box with a drop-down list box) |
| comp., MS | drop-down list box | blwch cwymprestr (A control on a menu, toolbar, dialog box, or data access page that displays a list of options when you click the small arrow next to the list box) |
| comp., MS | list box | blwch rhestr (A control in Windows that enables the user to choose one option from a list of possibilities) |
| comp., MS | off-box termination | terfyniad off-box (A termination in which a proxy server terminates an SSL request and then forwards the request to a Web server by using HTTP. In this case, alternate access mappings can be configured to return these requests using SSL, thus maintaining secure communication between the client and the proxy server) |
| comp., MS | rich-text box | blwch testun cyfoethog (A standard Windows control that is similar to a standard text box, except that it also supports individual character and paragraph properties) |
| comp., MS | scroll box | blwch sgrolio (A component of a scroll bar that indicates the relative position (and optionally the proportion) of the visible information relative to the entire amount of information. The user can drag the scroll box to view areas of information not currently visible) |
| comp., MS | search box | blwch chwilio (A text box in which someone types words to begin a search) |
| comp., MS | spin box | blwch sbin (A control (composed of a text box and spin button control) that allows a user to adjust a value from a limited range of possible values) |
| comp., MS | split box | blwch hollti (A special control added to a window, typically adjacent to the scroll bar, that allows a user to split a window or adjust a window split) |
| comp., MS | text bounding box | blwch terfyn testun (The smallest rectangle that can enclose the text in a text frame) |
| comp., MS | text box | blwch testun (A rectangular control in an application that allows the user to enter or edit text) |
| comp., MS | To box | blwch At (A text box where someone enters the e-mail addresses of the primary recipients of an e-mail message) |
| comp., MS | Vertical Box List | Rhestr Blychau Fertigol (A SmartArt graphic layout used to show several groups of information, especially groups with large amounts of Level 2 text. A good choice for bulleted lists of information) |