A project file is used to speed up the process of loading multiple source code files, especially when the source files are saved in different directories. When you open a project file all the individual source code files are opened in the IDE. There is no limit to the number of files that may make up a project.
A project file is saved with an extension of .PBP or .PRJ extension, unless the list of project file extensions has been modified, see the Editor Preferences topic for information on modifying the extensions used for project files.
See Also
The PowerBASIC Integrated Development Environment