> For the complete documentation index, see [llms.txt](https://support.functionjunctionapp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.functionjunctionapp.com/function-types.md).

# Function Types

- [Discounts](https://support.functionjunctionapp.com/function-types/discounts.md): Learn about creating discount functions and the different types.
- [Conditional discounts](https://support.functionjunctionapp.com/function-types/discounts/conditional-discounts.md): Learn how to set up the conditional discount function.
- [Shipping discounts](https://support.functionjunctionapp.com/function-types/discounts/shipping-discounts.md): Learn how to set up the shipping discount function.
- [Tiered discounts](https://support.functionjunctionapp.com/function-types/discounts/tiered-discounts.md): Learn how to set up the tiered discount function.
- [Bundle discounts](https://support.functionjunctionapp.com/function-types/discounts/bundle-discounts.md): Learn how to set up the bundle discount function.
- [Bundle fixed price](https://support.functionjunctionapp.com/function-types/discounts/bundle-fixed-price.md): Learn about the bundle fixed price function.
- [BOGO (Buy One, Get One)](https://support.functionjunctionapp.com/function-types/bogo-buy-one-get-one.md): Learn how to set up the BOGO (Buy One, Get One) function.
- [Cart and checkout validations](https://support.functionjunctionapp.com/function-types/cart-and-checkout-validations.md): Learn about cart and checkout validation functions
- [Customize payment options at checkout](https://support.functionjunctionapp.com/function-types/customize-payment-options-at-checkout.md): Learn how to set up a payment option customization function.
- [Delivery](https://support.functionjunctionapp.com/function-types/delivery.md)
- [Order Routing](https://support.functionjunctionapp.com/function-types/order-routing.md)
- [Fulfillment Constraints](https://support.functionjunctionapp.com/function-types/fulfillment-constraints.md)