{
  "Introduction": ["index", "install", "performance", "quickstart"],
  "Concepts": ["concepts/relation-tuples", "concepts/graph-of-relations"],
  "Examples": ["examples/olymp-file-sharing"],
  "Reference": [
    "reference/configuration",
    "reference/proto-api",
    {
      "Command Line Interface (CLI)": [
        "cli/root",
        "cli/root-child1",
        "cli/root-child1-subChild1",
        "cli/root-child2"
      ]
    }
  ],
  "Development": ["milestones"]
}