6.11.1 The primary file

Without a primary file the IDE compiles/runs the source of the active window when a program is started. If a primary file is specified, the IDE always compiles/runs this source, even if another source window is active. With the menu item "Compile|Primary file..." a file dialog can be opened where the primary file can be selected. Only the menu item "Compile|Compile" compiles the active window regardless. This is useful if a large project is being edited, and only the syntax of the current source should be checked.

The menu item "Compiler|Clear primary file" restores the default behavior of the IDE, i.e. the ’compile’ and ’run’ commands apply to the active window.