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SCRN_VAR_DEF (Screen Variable Definition)

Screen variable definitions are created automatically when a field is defined as a sub-command of the field command.

There is only one variable definition for each attribute view that appears on the screen. If an attribute is part of a repeat group, and hence appears on the screen many times, it is represented as multiple entries in the screen field variable table (SCRN_FLD_VAR).

Variable definitions are associated with attribute views indirectly using the screen variable I/O table (SCRN_VAR_IO). Each variable definition can act on behalf of one input or one output attribute view.