> For the complete documentation index, see [llms.txt](https://learn.charm.fi/charm-finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.charm.fi/charm-finance/previous-products-1.md).

# Previous Products

- [Charm Options (V1)](https://learn.charm.fi/charm-finance/previous-products-1/overview.md)
- [Key Features](https://learn.charm.fi/charm-finance/previous-products-1/overview/key-features.md)
- [Capital Efficiency](https://learn.charm.fi/charm-finance/previous-products-1/overview/key-features/why-is-capital-efficiency-important.md)
- [Use Cases](https://learn.charm.fi/charm-finance/previous-products-1/overview/use-cases.md)
- [How trading works](https://learn.charm.fi/charm-finance/previous-products-1/overview/how-does-it-work.md): This page describes how trading works at Charm.
- [How liquidity provision works](https://learn.charm.fi/charm-finance/previous-products-1/overview/liquidity-provision.md): This page describes how liquidity provision works at Charm.
- [Trading Tutorials](https://learn.charm.fi/charm-finance/previous-products-1/overview/tutorials.md)
- [Open a position](https://learn.charm.fi/charm-finance/previous-products-1/overview/tutorials/open-a-position.md)
- [Notes](https://learn.charm.fi/charm-finance/previous-products-1/overview/tutorials/open-a-position/notes.md)
- [Close a position](https://learn.charm.fi/charm-finance/previous-products-1/overview/tutorials/close-a-position.md)
- [Settlement](https://learn.charm.fi/charm-finance/previous-products-1/overview/tutorials/settlement.md)
- [Liquidity Provision Tutorials](https://learn.charm.fi/charm-finance/previous-products-1/overview/liquidity-provision-tutorials.md)
- [Provide liquidity](https://learn.charm.fi/charm-finance/previous-products-1/overview/liquidity-provision-tutorials/providing-liquidity.md)
- [Withdraw liquidity](https://learn.charm.fi/charm-finance/previous-products-1/overview/liquidity-provision-tutorials/withdrawing-liquidity.md)
- [FAQ](https://learn.charm.fi/charm-finance/previous-products-1/overview/faq-1.md)
- [Cube Tokens](https://learn.charm.fi/charm-finance/previous-products-1/overview-1.md)
- [How it works](https://learn.charm.fi/charm-finance/previous-products-1/overview-1/how-it-works.md)
- [FAQ](https://learn.charm.fi/charm-finance/previous-products-1/overview-1/faq.md)