The main window of File Substring Replacement Utility allows you to access all the features of the application. 

During the substring replacement process, the program will display the progress of the process that you can stop at any time. 

File Substring Replacement Utility comes with a set of useful tools that are available in this menu. 

The System-G menu of File Substring Replacement Utility enables you to use the calculator, calendar, character map and color picker. 

From the options menu of File Substring Replacement Utility you can configure the application's running settings.