Your Irie Pascal programs must be compiled into executables, before they can be run (i.e. executed). NOTE: If you try to run your programs before they are compiled, Irie Pascal will automatically compile them for you. While your programs are being compiled they are checked for errors, and if no errors are found an executable will be generated.
If you compile when the IDE is in project mode the IDE will always compile the program associated with the current project (regardless of which files you are curently editing). In this mode the executable options from the Miscellaneous options page will be used when compiling the program. Project mode is recommended for most people, and works best when you create a new project for each new program you create (see creating projects for more information).
If you compile when the IDE is in file mode the IDE will always compile the current editor file (regardless of the program associated with the current project). In this mode the executable options from The Executable Preferences page will be used when compiling the program. In file mode you don't have to create a new project for each new program you create.