probot: probot is a framework for building GitHub Apps in Node.js.
reference guide: a printable, step-by-step guide listing the actions to be completed for a specific course.
registration: when a user indicates they'd like to join a course. A user may register and unregister from a course as many times as they wish. A specific course has many user registrations, even multiple registrations from the same user.
response: text used by the Learning Lab bot to respond to actionable tasks taken by a learner.
steps: the building blocks of a course. These are actionable tasks for the learner to complete that are triggered by events.
tags: labels for courses to help users sort by topic, like "GitHub"
topics: common, high-level subjects used to help learners find Learning Lab courses that address the respective subject.