When the Irie Pascal IDE is in project mode (see The Executable Preferences page for more information) every program you work with must be associated with a project. Each Irie Pascal project is stored in a project file with the extension (.ipj), and only one program can be a associated with an Irie Pascal project at any one time. When a project is compiled, it is the program associated with the project, that is actually compiled. You can change the program associated with a project by using the Choose Program... menu entry from the Project menu. In addition to the program, Irie Pascal projects also contain a number of options that affect the editor, the compiler, as well as the executable generated by the compiler. It is recommended that you create a new project for each program that you write. This allows you to specify project options separately for each program that you write. If you do not specifically create or open a project, then the default project is used.
When you start the Irie Pascal IDE it automatically opens the default project. Whenever you create a new project it starts off with the options specified for the default project. So it's best to specify the options for the default project that you use most often.