# Features - [Checkout Extensions](https://docs.platter.com/smart-theme/platter+/features/checkout-extensions.md): The final step of the purchase journey holds untapped potential. With our In-Checkout Upsells, you can present customers with last-minute deals and offers that are too good to skip. - [Mix-and-Match Bundling](https://docs.platter.com/smart-theme/platter+/features/mix-and-match-bundling.md): Our Mix-and-match bundling feature allows customers to achieve tiered discount thresholds in a clear and concise way. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.platter.com/smart-theme/platter+/features.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.