.XOL File Extension

Map format used by Swiss Map software; contains overhead maps of Switzerland, including satellite images, aerial photographs, and topology information

XML Object Language file used by Sybase PowerDesigner, an enterprise data modeling and database design program; contains contain specifications for a particular object language, including syntax templates, stereotypes, data types, and constants; enables PowerDesigner to interpret object-based programming languages by reverse engineering the source code.

Some examples of XOL files include php.xol for the PHP language and csharp.xol for the C# programming language.