The Standard You Trust™
MSpec has several special-purpose runners scripts for various tasks like running the specs, tagging specs, and running a particular subset of the specs that are known to pass on a particular implementation. The runner scripts essentially just collect your wishes, configure the moving parts of the MSpec module, hand over control to MSpec, and get out of the way. The links below describe each of the runner scripts in detail.
Since consistency is a boon to readability, MSpec provides a script to generate template spec files. See the documentation for mkspec.