The term 'OLE Control Extension 1.0' is not a standard or widely recognized file format. It's highly likely that this refers to a specific version or implementation detail within the broader context of OLE (Object Linking and Embedding) controls. OLE controls, now more commonly known as ActiveX controls, are reusable software components that can be embedded into other applications. They are primarily used in the Windows environment. The '1.0' likely signifies the version of the control's interface or the underlying OLE technology it utilizes. Without more context, it's impossible to pinpoint the exact file extension or purpose. It's probable that the data associated with this 'extension' is embedded within another file format, such as a Microsoft Office document (e.g., .doc, .xls, .ppt) or a custom application's data file. The OLE technology allows these controls to interact with the host application and provide specific functionalities, such as displaying multimedia content, handling user input, or accessing external data sources. The data related to the control's state and configuration would be stored within the container file, possibly using a proprietary format or a structured storage mechanism.