Experimental software is sometimes included as part of a production-release product. It is provided to customers in order to obtain feedback. All experimental features are marked Experimental in this document. Whenever an experimental procedure, statement, or option is used, a message is displayed in the SAS log to indicate that it is experimental. The design and syntax of experimental software might change before any production release. Experimental software has been tested prior to release, but it has not necessarily been tested to production-quality standards, so it should be used with care.