You can change the design style of the T-FLEX CAD main window using the following command:
Icon  | 
Ribbon  | 
|---|---|
  | 
Get Started > Options > Theme 
  | 
Keyboard  | 
Textual Menu  | 
  | 
  | 
The command contains the drop-down menu, where you can select the desired style of design.
It is also available in the contextual menu of toolbars in textual interface.
