Controlling the Script run and Overwrite

When a script is running already, and we need to see the changes we made after the last run, '#SingleInstance' can save us the time and effort of clicking everytime the ok button that we are asked to.

#SingleInstance force ;skips the dialog box and replaces the old instance automatically
#SingleInstance ignore ;skips the dialog box and leaves the old instance running
#SingleInstance off ;allows multiple instances of the script to run concurrently