The Commerce Reference Store build system includes a file called buildtools/sample-userenv.properties. This file provides you with a template for creating a buildtools/userenv.properties file, where you can:
Override properties that are common to all Commerce Reference Store modules.
Specify the list of modules to be excluded from the build process by editing the
exclude.modulesproperty.Enable the building of user interface elements that appear in the Business Control Center by editing the
tools.devsetup.buildFlexElementsandFLEX_DIRproperties.
In general, Oracle recommends that you use the userenv.properties file for your common property overrides so that your changes are not lost when installing future versions of Commerce Reference Store. To create a userenv.properties file, create a copy of the buildtools/sample-userenv.properties file, rename it userenv.properties, and place it in the buildtools directory. Any future property modifications you make should be made to this file.

