Apparently inserting words into a document after the fact is standard procedure. I echo Andrew Coyne, if this is true, produce other documents that have been modified in this way.
I also want to add, has no one in our government ever heard of one these? There are better ways to indicate that a proposal is not accepted. Well-understood and clearly communicated ways that don't require tap-dancing around an issue.
The way I see it, we have 3 choices on how to judge the Conservative government on this affair:
1) They lied and misrepresented the issue
2) They are amateurs, incompetents, idiots and all around bozos incapable of clear and transparent communication.
3) All of the above.
I vote for 3, because they are even incompetent at their lies.
UPDATE: If polls are correct, then a large percentage of the Canadian public are complete bozos as well. There I said it. It's out there, and I ain't taking it back.