FRMLS_STREAM_TX 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 "RMS-FRM: Text for Stream" 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_FRMLS_STREAM_TX TYPE FRMLS_STREAM_TX.
The FRMLS_STREAM_TX table consists of various fields, each holding specific information or linking keys about RMS-FRM: Text for Stream data available in SAP. These include TEXT_RECN (RMS-FRM: Object Identifier), STRM_TEXT (Short Description of Stream), LINEMODE (Processing Status/Mode of a Record/Step Loop Line)... 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. .