This 类 allows you to write a XML file using a linear mode, that is, once you open a XML file for writting, you have to write each node in order, from the first node to the last one, and from the more superficial to the deeper one. It is less flexible than the XML tree model, but can be easier to use for some tasks. It can use less memory resources too for larger files.

The XML file can be written to a file or stored in memory, so you can use it as a string.