.ini file(A text file used by the operating system and by individual applications to store persistent settings related to applications, drivers, or hardware. Supported for backward compatibility. Use the registry to store these settings)
.ins file(A file that provides Windows Update Setup with Internet settings that configure the browser and associated components. You can create multiple versions of your browser package by changing the .ins file used by each package. Use the Profile Manager to create, save, and load .ins files)