Contexts are obsolete and should not be used. Contexts were introduced for Release 4.0 for high performance access to frequently required data. Since the introduction of ABAP Objects for Release 4.5, contexts have not been developed further. Since Release 6.40, contexts can be replaced by shared objects.
When you select an entry in the Modules table, the system fills the Interface table with the corresponding input and output parameters for that module.
When you select a dependent field in the Fields table, the system searches for the module that determines the field and fills the Interface table with the corresponding input and output parameters for that module.
For example, the interface for the module SPFLI in the sample context DEMO_TRAVEL looks like this:
Module SPFLI is a database table in the ABAP Dictionary. The Parameters column contains its input and output parameters, and the Field name column contains the associated fields in the context. The direction of the arrows in the I/O column show which parameters are input parameters and which are output parameters.