> For the complete documentation index, see [llms.txt](https://docs.h4.world/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.h4.world/market-orders.md).
# Market Orders
The controls section at the bottom of the trading page is the fastest way to submit market orders.
The user first sets leverage and margin size.
The left button submits a market Buy, which opens or increases a long using the best ask price. The right button submits a market Sell, which opens or increases a short using the best bid price.
H4 applies 0.3% slippage tolerance to improve execution quality. Market orders are submitted as IOC orders, so even with slippage tolerance they can still be dropped if no match is available immediately.
From the review panel, the user can adjust order size and add a stop loss or take profit before submission.
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