Читать книгу Office 2021 for Macs For Dummies - Bob LeVitus - Страница 38

The File Formats pop-up menu in the Save dialog lets you choose the file format for the file you’re about to save. In Figure 3-9, Word is about to save this document in the default Word file format (.docx). The default format in Excel is .xlxs and for PowerPoint it’s .pptx.

The default file formats for Office documents since 2007/2008 are four-letter acronyms (FLAs) that end with the letter x. Before that, they were three-letter acronyms (TLAs) that did not end with an x (for example, the default for Word was .doc). The x indicates that the newer format is based on eXtensible Markup Language, or XML, an open standard for encoding documents in a machine-readable form.

Those default formats are perfectly fine most of the time, but occasionally you may want (or need) to use a different format. If someone you're sending a document to is unable to open it, try saving a copy of the document in an older format, such as .doc, .xls, or .ppt. Or if the person doesn't need to edit the document, perhaps a PDF would work best.