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greeting.xhtml: An XHTML page that uses the JavaServer Faces Facelets tag libraries.

The Your First Cup: An Introduction to the Java EE Platform source text has not yet said whether greeting.xhtml "is" a Facelet, or just 'uses the the JavaServer Faces Facelets tag libraries'.

Also, it has not yet been explained what relationship (if any) the 'JavaServer Faces Facelets tag libraries' have with Expression Language (EL) tags already encountered during this UML™ Parsing Analysis demo.

Until further info becomes available in the source text these matters are simply noted.