> For the complete documentation index, see [llms.txt](https://prodigyfi.gitbook.io/perps-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prodigyfi.gitbook.io/perps-user-guide/orderbook-and-chart/viewing-the-orderbook.md).

# Viewing the orderbook

The orderbook view is a constantly updated, real-time list of all outstanding buy and sell \[limit] orders for the selected instrument, organized by total USD price (price of instrument X quantity of instrument).

<figure><img src="https://379889487-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fcjg2v8y2qzzLnhGqycUk%2Fuploads%2FyeeCO5XkBpqfeDWbw99s%2FScreenshot%202023-05-18%20at%201.30.20%20PM.png?alt=media&amp;token=a8ad3b33-571e-4202-9a38-40b9db3490a6" alt=""><figcaption></figcaption></figure>

The order book is presented in two sections, identified by red or green colored bars. The top half with red-colored bars are Sell orders, or *asks*. The bottom half with green-colored bars are Buy orders, or *bids*.

Each row in the orderbook contains price levels and the number of contracts (**Size**) for each corresponding price. The **Total** column shows a cumulative count of contracts from the middle of the order book to each price level.