To compile a single script, click on the Compile button in the toolbar, or
press F8. If successful, a message will be display at the bottom of the editor.
If the compilation fails, a list of errors will be displayed. Clicking on the errors
will take you to the line of the script with the error.
To recompile the entire game, click the Compile all button in the toolbar.
A progress dialog will come up, and you can cancel the compile operation.