As soon as the statement STOP is encountered, the execution of the model stops and all the hitherto produced text will be placed in the result document.
Definition of the statement STOP:
STOP (return code) (* TEXT, optional, up to 7 characters *)
The keyword STOP can be interpreted as jump to the end of the model.
You can place a return-code of type TEXT in a STOP-statement. The first seven characters of the return code will be put in the file ITPSTOP in the ITP folder for temporary files.
STOP ( "code 1")
By inserting a STOP with return code in a strategic place in a model you can retrieve up to which point the model execution process DID succeed.