# General - [Velogic's Support Policy](https://docs.velogicfit.com/general/support-policy.md): Velogic's email-first support policy and how to get help - [Using Bar XY Cartesian Coordinates](https://docs.velogicfit.com/general/bar-xy-coordinates.md): Complete guide to using Bar XY Cartesian coordinates for bike fitting and frame comparison. Learn about Reach and Stack metrics and why Bar XY provides more accurate frame sizing. - [Downloading statements](https://docs.velogicfit.com/general/downloading-statements.md): If you need detailed statements for your accounting record, you can download these through our website. - [Changing your credit card](https://docs.velogicfit.com/general/changing-credit-card.md): If your credit card expires, or you need to change the credit card used for your Velogic subscriptions, you can do that yourself easily via our web application. --- # 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.velogicfit.com/general.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.