To quickly navigate the document, you can design a root page in the form of a grid with links to main sections.

Example: design of the Yandex Compute Cloud documentation leading page.

## Structure

The standard file structure of the index.yaml leading page:

title: Document name
description: A description of the document
meta:
noIndex: true
- title: First section
description: A description of the first section
href: path/to/file.md
- title: Second section
description: A description of the second section
href: path/to/file.md

• title: Document name. It's displayed in the table of contents above the list of all sections.
• description: A description of the document.
• meta: Metadata.
• links: Grouping element. The following is set within each section:
• title: Name of the section. Displayed as the name of the link.
• description: Description of the section.
• href: The relative path to the file.

## Element visibility conditions

Individual sections can be included on or excluded from a leading page, depending on the values of variables. To describe visibility conditions, the when parameter is used.

Possible comparison operators: ==, !=, <, >, <=, and >=.

- title: Section with a conditional inclusion.
description: A description of the section.
href: path/to/conditional/file.md
when: version == 12


## Substitutions and conditional operators

Title and description of document and links support substitutions and conditional operators.

title: "{{ title }}"
description: "{% if version == 10 %}{{ description_legacy }}{% else %}{{ description }}{% endif %}"
meta:
title: "{{ meta_title }}"