* Reboot may be necessary for these changes to take effect *
System variables used by FPS. These are environment variables in windows that FPS uses to locate files needed for the system to run. Below those variables are represented as %xxxx% the value between the % is the name of the variable. This is just a common notation format that DOS / Windows uses to access the variable. So on the command prompt if the variable was needed %xxxx% would be used.
In most programming languages including VBA and PHP the % is not needed and could cause fatal errors.