ABAP Keyword Documentation →  ABAP Glossary → 

executable program

ABAP program that can be executed using the SUBMIT statement. An executable program can be started by choosing System → Services → Reporting, or from other services such as report transactions. Whichever method is chosen, a SUBMIT is always executed internally. An executable program can have its own dynpros, be associated with a logical database, and be executed in background processing.