.TXT File Extension Description:

The file extension .txt is used by windows applications, MS-DOS, UNIX and text editors for common text file. All what varies between them is the character encoding depending on the author and/or native charset of operating system.

These types of files have readable information (human) on bank and instrument items or levels of waveform. An example of files with this extension is plain text file which is in the text files category. This is standard (text) document with unformatted text which can be recognised by text editing program and other software programs.

Learn more here: http://txt.file-extension-library.com/