# Perpetra Docs

- [Introduction](https://docs.perpetradex.xyz/get-started/introduction.md): Perpetra is a perpetuals DEX built on Hedera
- [How Perpetra Works](https://docs.perpetradex.xyz/get-started/how-it-works.md): A walkthrough of what happens when you place a trade on Perpetra
- [Supported Markets](https://docs.perpetradex.xyz/get-started/supported-markets.md): Markets currently live on Perpetra and how each one is priced
- [Placing Orders](https://docs.perpetradex.xyz/trading/placing-orders.md): How to open a position on Perpetra
- [Order Types & Reduce-Only](https://docs.perpetradex.xyz/trading/order-types-and-reduce-only.md): Market, limit, and TP/SL orders, and how reduce-only orders work
- [Margin Modes](https://docs.perpetradex.xyz/trading/margin-modes.md): Cross vs Isolated margin on Perpetra
- [Positions & Margin](https://docs.perpetradex.xyz/trading/positions-and-margin.md): Leverage, initial margin, and how Perpetra checks a position's health
- [PnL & Liquidation](https://docs.perpetradex.xyz/trading/pnl-and-liquidation.md): How unrealized PnL and liquidation price are calculated on Perpetra
- [Funding Rate](https://docs.perpetradex.xyz/trading/funding-rate.md): Why funding exists and how it's calculated on Perpetra
- [Fees](https://docs.perpetradex.xyz/trading/fees.md): Trading fees, liquidation fees, and how they're distributed
- [Mark Price & Index Price](https://docs.perpetradex.xyz/trading/mark-price-and-index-price.md): The two prices behind everything on Perpetra
- [Slippage & Execution](https://docs.perpetradex.xyz/trading/slippage-and-execution.md): What max slippage actually protects you from on Perpetra
- [Deposits & Withdrawals](https://docs.perpetradex.xyz/trading/deposits-and-withdrawals.md): How your funds move in and out of Perpetra
- [Overview](https://docs.perpetradex.xyz/architecture/overview.md): How Perpetra fits together, end to end
- [Contract Map](https://docs.perpetradex.xyz/architecture/contract-map.md): What each piece of Perpetra is responsible for
- [Order Lifecycle](https://docs.perpetradex.xyz/architecture/order-lifecycle.md): What actually happens between placing an order and having a position
- [Order Signing](https://docs.perpetradex.xyz/architecture/order-signing-eip712.md): How your wallet proves an order actually came from you
- [Off-Chain Matching Engine](https://docs.perpetradex.xyz/architecture/off-chain-matching-engine.md): How Perpetra pairs up trades before they ever touch the chain
- [Risk Engine](https://docs.perpetradex.xyz/architecture/risk-engine.md): Where every trade gets checked against Perpetra's risk limits
- [Keeper System](https://docs.perpetradex.xyz/architecture/keeper-system.md): How Perpetra decides which bots are allowed to trigger platform actions
- [Points & Referrals](https://docs.perpetradex.xyz/architecture/points.md): How activity on Perpetra is tracked for future rewards
- [Liquidation Engine](https://docs.perpetradex.xyz/architecture/liquidation-engine.md): How underwater positions get closed out on Perpetra
- [Formula Reference](https://docs.perpetradex.xyz/reference/formula-reference.md): Every formula used across Perpetra, in one place
- [Contract Addresses](https://docs.perpetradex.xyz/reference/contract-addresses.md): Deployed contract addresses for Perpetra