You’ve heard of Presidential signing statements.
Here is a sample of an Oregon Governor’s non-signing statement, which you can also link to from the Governor’s website on Legislative Actions: see Legislative Approval Without Signature
As you know, bills can become law without the Governor’s signature, if the bill is not signed within 30 days of it being placed on his desk, so to speak, at the end of a legislative session. (I’m oversimplifying here so bear with me. For a full description of the legislative process in Oregon, visit the Legislature’s How an Idea Becomes a Law.)