The WINDOW statement creates the HRDATA window. MENU= associates the PROCLIB.MENUS.ENTRDATA.PMENU entry with the window.
data proclib.deptxx; window hrdata menu=proclib.menus.entrdata #5 @10 'Employee Number' #8 @10 'Salary' #11 @10 'Employee Name' #5 @31 empno $4. #8 @31 salary 10. #11 @31 name $30. #19 @10 'Press ENTER to add the observation to the data set.';