DS最强强物理模拟自制软件《口袋物理学》今日发布了最新的0.4版。新版增加了包括存取在内的众多新功能。喜欢的朋友不要错过哦！* Saving and loading! (introducing the XML-based .pp file format)
* Smart pin placement: While the pen is on the screen, you can move the pin around. It's position is fixed when you lift the pin. While you drag the pin around, the objects that are about to be pined are highlighted.
* Smart deleting: Deleting also works just smart pin placement. Also, pins can now be deleted.
* Toggle viewing window visibility with select.增加Save和load功能,可以切换浏览窗口。
