The behavior of Poseidon is defined by a number of properties. You can adjust the behavior of Poseidon to your personal needs by changing the corresponding properties using the settings dialog. Once the settings dialog is open (choose Settings from the Edit menu), you will see a number of tabs.
Language - This is the language used for the Poseidon user interface. You can switch the interface to a different language by choosing your preferred language from this selection list. Poseidon currently supports English, German, French, Spanish, Italian and Chinese. By default, the system language is used - or English, if the system language is not available. In other words, if you start Poseidon on a Spanish system, for example, the program will start in Spanish - but on a Swedish system the program will start in English, as Swedish is not currently supported.
Re-Open Last Project on Startup - If checked, Poseidon opens the most recently used project on startup.
Skip confirmation dialog when deleting elements - If checked, the dialog asking if you really want to delete selected elements will not appear.