> ## Documentation Index
> Fetch the complete documentation index at: https://calcs.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Sections

> Choose section databases and proprietary products, check data versions, and use custom sections.

<CardGroup cols={3}>
  <Card title="Choose a Section Database" icon="database-search" href="/docs/running-calculations/setting-up-a-calculation/sections/section-databases">
    Which steel, timber and cold-formed steel section databases Calcs.com covers in Australia, the US and Europe.
  </Card>

  <Card title="Find Proprietary Timber Products in the Section Library" icon="trees" href="/docs/running-calculations/setting-up-a-calculation/sections/proprietary-timber-products">
    Which Australian and New Zealand proprietary timber brands are built into the Calcs.com section library.
  </Card>

  <Card title="Trace Manufacturer Characteristic Values" icon="file-search" href="/docs/running-calculations/setting-up-a-calculation/sections/manufacturer-characteristic-values">
    Where the characteristic values for proprietary timber products in Calcs.com come from, and how to check them.
  </Card>

  <Card title="Check Material and Section Data Versions" icon="database" href="/docs/running-calculations/setting-up-a-calculation/sections/material-section-data-versions">
    When material and section data is reviewed, and how saved calculations keep the version they were run with.
  </Card>

  <Card title="Use Custom Sections or Request New Ones" icon="map" href="/docs/running-calculations/setting-up-a-calculation/sections/linking-custom-sections-or-requesting-sections-to-calcs-database" />
</CardGroup>