xor by using the skip argument in each of them. The reporters will show that these suites or specs where skipped from execution. The functions you can prefix are:
skipargument can be a boolean value or a closure. If the value is true then the suite or spec is skipped. If the return value of the closure is true then the suite or spec is skipped. Using the closure approach allows you to dynamically at runtime figure out if the desired spec or suite is skipped. This is such a great way to prepare tests for different CFML engines.