# LB V2.2 Key Changes A summary of key changes in Liquidity Book V2.2: * Hooks are added to LBPair * Core functionality stays the same, existing functions have signatures unchanged ### LBFactory * Added functions to manage hooks on pairs (only LB\_HOOKS\_MANAGER\_ROLE) ### LBPair * Added functions to manage hooks (only LBFactory) * Added hooks on mint, burn, flashloan and transfer ### LBRouter * `Versions` struct is extended to accomodate V2.2 paths ### LBQuoter * Includes V2.2 paths ### LBHooksRewarders * New contract utilizing hooks * Rewards users that provide liquidity based on time spent in defined range around active bin --- # 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://developers.lfj.gg/key-changes.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.