lesson.meta.yaml file. This is written in YAML, and contains a series of fields for making a lesson work. Some of these fields are required, some aren't. Some have a length requirement, and others don't. For guidance here, you should definitely get up to speed with thesyrctltool. That tool has a validation function you can run on a curriculum, and it will let you know if anything needs fixed.
lessonName The human-readable name for a lesson. Kind of like a blog post title.lessonSlug A unique ID for this lesson. You can assign this yourself, as long as it's unique in this curriculum.category The category for this lesson - supported options are "fundamentals", "tools", and "workflows"lessonDiagram An internet-accessible URL to an image to use as a diagram for this lessontier The environment this lesson is meant to run in. Options are "local", "ptr", and "prod"prereqs A list of lesson IDs that a learner should go to first, to prepare for this lesson properly. description A slightly more long-form explanation of what's included in this lessonslug Ideally, a very short (1-3 words) summary of this lesson. Used for searching.tags A list of keywords that are included in this lesson. Used for searching.