13. The method according to claim 12 , wherein the 4GL program header includes Natural Optimization Code parameters identifying the 3GL and/or Assembler program as Natural Optimization Code to be executed in the 4GL runtime environment.
12. The method according to claim 1 , wherein the 4GL identifier is a 4GL program header transforming the 3GL and/or Assembler program into a 4GL executable without modifying the 3GL and/or Assembler program.