PMTX_WORK 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 "Help fields for the updating of texts" 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_PMTX_WORK TYPE PMTX_WORK.
The PMTX_WORK table consists of various fields, each holding specific information or linking keys about Help fields for the updating of texts data available in SAP. These include TDID (Text ID), TDNAME (Name), SPRAS (Language Key), TXLINES (Description of technical object)... 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. .