[Pharo-project] Some questions about pharo

Hello =) I have a few questions: - If I run a headless Pharo, is it possible to display the graphical interface after? (for example, if something raises an exception, I want to open the GUI and use the debugger) - I wanna run Pharo as a deamon; how can I interact with it after i launched it? (for example, if I want to give it a piece of code to execute). Adrien.