WCS_STRNO 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 "WCM: Functional Location (External) (Selection Table)" 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_WCS_STRNO TYPE WCS_STRNO.
The WCS_STRNO table consists of various fields, each holding specific information or linking keys about WCM: Functional Location (External) (Selection Table) data available in SAP. These include OPTION (Version Number Component), LOW (Functional Location Label), HIGH (Functional Location Label)... 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. .