Although the SunOS Binary Compatibility Package and the SunOS/BSD Source Compatibility Package allow you to use applications as they are, you should port applications as soon as possible. Long-term reliance on the compatibility packages is not advised for the following reasons:
The application's performance is reduced.
You will not be able to take advantage of the Solaris 7 operating environment's increased range of operations and portability.
Compatibility packages are temporary aids to help sites through the transition.