It seems like you're referring to OAVA EA V1.0 for MetaTrader 4 (MT4). This is an Expert Advisor (EA) that likely focuses on automating trading strategies without the need for external DLL (Dynamic Link Library) files. The absence of DLL files means that it operates purely within the MetaTrader 4 platform and doesn’t rely on external software components, which is great for avoiding compatibility issues or potential security risks.