Environment Variables

Name: Enter the name of the environment variable to be created/edited
Value: Enter the new value or the value to be appended.
Action On Install: The environment variable can either be:

Action on Uninstall: On uninstall the environment variable can either be leaved or removed.
Replacement: Select how the value is to be added. It can either be: Feature: Select the feature to add the environment variable to from the drop down list.
System Environment Variable: Select this check box if it is a system environment variable. If it is not checked it will be installed as a user environment variable.