solution file (.sln) and a hidden solution user options file (.suo)

The solution file is a text file that contains information such as the following:

■ A list of the projects that are to be loaded into Visual Studio 2005

■ A list of project dependencies

■ Microsoft Visual SourceSafe information

■ A list of add-ins that are available

The solution user options file is a binary file that contains various user settings related to the Integrated Development Environment (IDE), such as the following:

■ The task list

■ Debugger break points and watch window settings

■ Visual Studio window locations