What is an xml file and how to open it?

Xml Extensible Markup Language (XML Extensible Markup Language) is a subset of standard generalized markup language, and it is a markup language used to mark electronic documents to make them structured. Xml files can be opened with a text editor. Here is an example of opening an xml file with Notepad.

1. Right-click the xml file to open, and click Properties in the expansion menu to open the properties interface:

2. Click "Change ..." in the property interface, and then click "Notepad" in the pop-up window:

3. At this time, the opening mode of xml becomes Notepad. Double-click the xml file and open the current file with Notepad: