The Main Window of TrueTTY shows you all the information you need about the file being used, such as mode, speed, shift etc. 

In the Setup Window you can personalize and tweak various settings of the file in use, adjust text, view, fonts and colors as you like them. 

This is the Edit Macros Window designed to give the user the opportunity to edit multiple macros that will eventually make the work easier. 

The Mode Menu has a wide variety of options related to the specific way of rendering an audio file.