# Advanced - [File descriptions](https://iddynamics.gitbook.io/flepimop/more/advanced/file-descriptions.md) - [Numerical methods](https://iddynamics.gitbook.io/flepimop/more/advanced/numerical-methods.md) - [Additional parameter options](https://iddynamics.gitbook.io/flepimop/more/advanced/additional-parameter-options.md): Aka “magic numbers” - fixed parameters that may or may not be in config, like MCMC step size, dt, etc . . . - [Swapping model modules](https://iddynamics.gitbook.io/flepimop/more/advanced/swapping-model-modules.md): (Ie using a totally different compartmental model or outcomes model) - [Using plug-ins 🧩\[experimental\]](https://iddynamics.gitbook.io/flepimop/more/advanced/using-plug-ins-experimental.md): How to plug-in your code/data directly into flepiMoP --- # 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://iddynamics.gitbook.io/flepimop/more/advanced.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.