>>>I'm trying to query my read messages for titles that contain 'valid' from the .NET forum. However, it appears I am only able to set one criteria. Is this a global limitation or something available only to PUTM?
>>
>>No, "criteria" is plural. Criterion is singular.
>
>MS are a lot to blame for that. I recall Excel's QBE form where you enter each "criteria" in turn.

The company which made "Windows" a singular and somehow frowns when Windowses are mentioned, can't be trusted with grammar. They're quite suboptimal in that departments.