Hey jsd1982. Sorry for the late reply. You are right, I didn't describe the term "pipeline" explicitly. A pipeline is a compilation of functions which do "something". We used/use "priority" to determine to order of execution of these functions. We already noticed that priority is probably a bad name and we actually need something different (https://github.com/gaia-pipeline/gaia/issues/19). We are currently working hard on the documentation part (https://gaia-pipeline.io). The project is really early. I hope we can improve within the next weeks/month a lot! :-)