It would be really helpful if user-defined config values were formatted differently throughout the documentation. It's often unclear if a value in a configuration label is predefined or up to the user to define. For instance, consider the following example from the docs...
# Enable gzip compression
labels:
- "traefik.http.middlewares.test-compress.compress=true"
If "test-compress" was bold or a different color or style, it would be far more clear that it was a user-defined value. I think this simple convention would enhance the utility of the docs - especially when used as a quick reference.