How to pause the ABAP program execution for given number of seconds

Study the following self-explanatory code to pause the ABAP program execution for a given number of seconds:
 

REPORT ZABAP_PAUSE

PARAMETERS: P_TIME TYPE I.

WRITE: / 'DELAY IN SECONDS:', P_TIME.

* Get the Run time.
GET TIME.

WRITE: / 'START TIME:', SY-UZEIT.

* Pause execution for P_TIME seconds.

CALL FUNCTION 'RZL_SLEEP'
 EXPORTING
    SECONDS        = P_TIME
  EXCEPTIONS
    ARGUMENT_ERROR = 1
    OTHERS         = 2.

IF SY-SUBRC <> 0.
 WRITE:/ 'ERROR WITH SLEEP 
          FUNCTION'.
ENDIF.
GET TIME.

WRITE: / 'END TIME:', SY-UZEIT.