CNTX0 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 "Screen Fields for Project Management System Text Catalog" 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_CNTX0 TYPE CNTX0.
The CNTX0 table consists of various fields, each holding specific information or linking keys about Screen Fields for Project Management System Text Catalog data available in SAP. These include TXTTI (PS text description), TXTAR (Text type), TXTSP (Language Key), FORMAT (Text format for PS text)... 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. .