What logical operators are supported in the Condition attribute?
Beta 1 Support
For Beta 1, the Condition attribute supported a very limited set of operators, and multiple operators could not be combined using "And" or "Or". The list of supported operators is described
here.
Beta 2 and Beyond
We have introduced complex conditional syntax which provides much more flexibility and power. The spec is at
ComplexConditionsSpecificationV1. There are no official ""DevDiv"" drops
yet that contain this new functionality.