COMT_PRWB_USER_DATA_S 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 "User Settings: Product Workbench Data" 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_COMT_PRWB_USER_DATA_S TYPE COMT_PRWB_USER_DATA_S.
The COMT_PRWB_USER_DATA_S table consists of various fields, each holding specific information or linking keys about User Settings: Product Workbench Data data available in SAP. These include LAST_OBJECT (GUID of Object in Product Maintenance), LAST_OBJECT_TYPE (Object Types that Can Be Maintained in Product Maintenance), START_TABLOC (Tab Page in Locator), LOC_WIDTH (Locator Width)... 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. .