What is the maintenance margin in Hyperliquid?

Excuse me, could you please clarify for me what exactly the maintenance margin in Hyperliquid represents? As I understand, it's a crucial aspect of trading on the platform, but I'm unsure of its specific function and how it impacts my trading positions. Is it related to the minimum balance required to maintain open positions, or does it serve a different purpose? I'd appreciate any insights you could provide to help me better understand this concept.