You can setup the IDE (and/or a single folder) to always Load/Save from TXA.
It uses an .APV file extension for the Text APP. When you open a Solution it makes the .APP from the APV. When you save the SLN it writes both APP and APV. It’s typically used for Source Control.
It is pretty hard to do serious work inside the TXA format. You may get some ideas by looking at the Wizards. They do all their work by writing a TXA. All the Wizard code it there to see in the Templates folder.