# Introduction

The Gamma Limit Order Hook system is a comprehensive limit order system for Uniswap V4 pools, enabling single-tick limit orders and scale orders that execute autonomously through swap hooks.

## Key Features

### Cost / Fee Distribution

* FREE to create limit orders — No fees for order creation.  Pay for only gas.
* EARN swap fee revenues generated by single-tick liquidity positions
* EQUITABLE fee revenue distribution among same-position limit orders based on order size and time in range 

### Order Types

* **Limit orders**:  Single-tick limit orders that are automatically executed via swap hooks
* **Scale orders**:  Multiple single-tick limit orders that are placed across a price range.  Up to 100 limit orders can be placed at one time at various price points

### Order Management

* **Order execution**:  Orders are automatically burned from the liquidity pool and held in Uniswap's PoolManager contract once executed
* **Order claiming**:  After orders are executed, users can claim their principal and fees earned from their single-tick positions
* **Order cancellation**:  Orders can be cancelled at any time.  Any fees earned while position was active are claimed during cancellation
* **Batch claiming/cancellation**:  Claiming & cancelling multiple orders within a single transaction is available for gas efficiency

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