This help book in the Language Reference book covers the following information:

Every Xbase command and function includes a section that lists the OODML (object-oriented data manipulation language) equivalent, when one exists.

The examples in this section are mostly data processing and utility code.  Data entry in dBASE PLUS 9 is done at another level, either using the form-based events that are melded into the Xbase worksets, or the dBASE PLUS 9 data objects, which replace most Xbase functionality and provide powerful new object-oriented capabilities.

The examples also do not use any new dBL syntax, and thus are compatible with older versions of dBASE.