| Subject | English | Galician |
| comp., MS | header row | fila de cabeceira (The first row in a spreadsheet. The header row contains category labels that describe the contents of the columns) |
| comp., MS | header source | orixe de cabeceira (A document that contains the header row (or header record) to be used with the data source specified for a mail-merge main document) |
| comp., MS | message header | cabeceira da mensaxe (A hidden section of an e-mail message. From the time a message is first created, information about it is added to the message header, including technical details, such as who created the message and the software used to compose it) |
| comp., MS | P2 header | cabeceira P2 (A hidden section of an e-mail message. From the time a message is first created, information about it is added to the message header, including technical details, such as who created the message and the software used to compose it) |
| comp., MS | P1 header | cabeceira P1 (" The information contained in an e-mail message that is required to send and deliver a message between messaging servers by using SMTP protocol commands. The message envelope contains the sender e-mail address and the recipient e-mail address information. Recipients never see the message envelope, because it is not part of the message content, and it is discarded when the message reaches its destination. The X.400 messaging standard equivalent to the message envelope is called the "P1 header." The message envelope is often referred to as the "P1 header.") |