In addition to documentation data, the Predict system file contains information on which members are actually implemented in an application and how these members are used (how they are actively referenced). Information on active references to members is stored in Predict XRef data. XRef data mirrors the 'real world': an application in its current status.
XRef data for Natural objects can be evaluated with functions of the
Natural LIST XREF command. This 'command' is in fact
a comprehensive utility offering a wide range of retrieval functions. The
Natural LIST XREF utility is described in this
section.
Other ways of evaluating XRef data are described under
See also the XRef Evaluation documentation for further information.
For a general description of how XRef data is created and used, see the section XRef Data in the Introduction to Predict documentation.
This section covers the following topics: