Xposed is a framework for the modules which can help us to change it’s native behaviour of the system & applications without using or touching any of the APKs. That’s really an amazing feature because
it works for the module for different versions and ROMs as long as the given original code/script is not changed too much. We can even undo the process that we made. All the changes will be done in the memory, so you need to activate the module & reboot the system to take effect. If you want to get back to it’s original state, then simply deactivate the module and reboot the system again.
Note that this only works with root access on Android 4.0.3 or later.