Currently, there seems to to be very little instruction on how/why certain combinations of _sidebar.md files and folder structures make the sidebar navigation and pagination work.

For example, if my _sidebar.md file contains this:

- **Services**
    - [Getting Started](services/getting-started.md)
    - [Running Service Locally](services/running-services.md)

and my folder structure is this:

/services
  _sidebar.md
  index.md
  getting-started.md
  running-services.md

the pagination and menu structure works fine. But there is no explanation to why this works. If I move .md files into sub-folders, pagination doesn't work. If I simply have...

- [**Services**](services/index.md)

then pagination does not appear and the sidebar no longer shows the sub-pages. It is quite difficult to know where to place files and what to put into the sidebar to try and get a solution whereby the sidebar can auto-generate itself correctly and the pagination work as expected.