What is a subproject?
Subprojects are projects which are included in an existing project. A subproject need not be runable. A runable project must contain the complete project-directories and a working database The directory .../db/pvss/ in the directory structure as well as a config file (.../config/config) have to exist. All registered subprojects that are listed in the project administration panel are shown as well as the registered projects that are indicated as "not executable".
After including a subproject all files (e.g. panels, scripts) of the included project are available in the project where the sub-project was loaded. The entries in the config file (proj_path = "...") are executed automatically. A subproject may not contain any own (cascaded) sub projects!