The user should be aware that the SIP-approved provisions may differ from the current State-effective air pollution control provisions for the following reasons:

This provision differed the most from canon law; as the Iorwerth text puts it:

On the other hand, Canadian provision of fair dealing, differs in some aspect from United States, but shares its approach with the United Kingdom.

But the provisions of a bill now before the House Committee on Energy and Commerce differ in tone and emphasis from most of the state laws.

Conquest and liberation are thus polar opposites; provision for the aftermath of one differs fundamentally from that for the other.

The provisions are in both the House and Senate versions, but differ in their details.

Actual provision in State budgets also differs from the gross outlays communicated.

Individual Member States' provisions and traditions when it comes to police work, especially procedures relating to ID checks and arrests, differ from one another in many respects.

Current national provisions, where they exist, differ widely in the various Member States, and often even within a Member State.

Temporary provisions concerning the compensation for expropriations may differ from the requirements laid down in the constitution.