EWFPAR_PART is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Action Box Parameter with Text" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_EWFPAR_PART TYPE EWFPAR_PART.
The EWFPAR_PART table consists of various fields, each holding specific information or linking keys about Action Box Parameter with Text data available in SAP. These include ELEMENT (Element), REFTYPE (Reference type), TABELEM (Multiline element), REFOBJTYPE (Reference obj. type)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .