.. _section-guide_input:

Main Input
========================



The main input file uses the format `YAML <https://yaml.org/>`_.

Overall layout of the main input file:

..  only:: ivabs

    ..  code-block:: yaml

        version: "a.b.c"

        # Global structure specification
        structure:
            ...

        # Cross-sections design specification
        cs:
            ...

        # Functions specification
        function:
            ...

        # Analysis steps specification
        analysis:
            ...

        # Design study specification
        study:
            ...




..  toctree::
    :maxdepth: 2

    yaml
    structure
    sg
    function
    analysis
    study