LV13F 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 "Conditions: Views - Internal Fields" 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_LV13F TYPE LV13F.
The LV13F table consists of various fields, each holding specific information or linking keys about Conditions: Views - Internal Fields data available in SAP. These include VAKEF1 (Field value for a field in the variable key), VAKET1 (Description for a field in the variable key), VAKES2 (Code for a field in the variable key), VAKEF2 (Field value for a field in the variable key)... 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. .