| Subject | English | Welsh |
| comp., MS | Blocked Top-Level Domain List | Rhestr Parthau Uwch wedi'u Rhwystro (A list that allows you to block top-level domain names. Blocking country/region top-level domains allows you to filter unwanted e-mail messages you receive from specific countries or regions) |
| comp., MS | top-level domain | parth lefel uchaf (In the Internet and other networks, the highest subdivision of a domain name in a network address, which identifies the type of entity owning the address (for example, .com for commercial users or .edu for educational institutions) or the geographical location of the address (for example, .fr for France or .sg for Singapore). The domain is the last part of the address (for example, www.acm.org)) |
| comp., MS | top-level folder | ffolder lefel uchaf (The uppermost directory on a computer, partition or volume) |
| comp., MS | top-level property grid | grid priodwedd lefel-uchaf (A property grid that only displays the properties that appear in the sentence-level view of an action) |
| comp., MS | top-level site | safle lefel uchaf (A Web site at the top of the hierarchy in a site collection, from which you can manage site collection features) |
| comp., MS | top-level Web site | gwefan lefel uchaf (The default, top-level site provided by a Web server or virtual server. To gain access to the top-level Web site, you supply the URL of the server without specifying a page name or subsite) |