drop-in tool

基本解释

A platform selection drop-down list box will appear in the main tool bar.
主工具欄中會出現一個平台選擇下拉列表框。
In this article, you will not see the source code for that tool, but you will see the source code for two others--the create and drop tools.
在本文中，您看不到該工具的源代碼，不過可以看到其他兩個工具 —— 創建和刪除工具的源代碼。
The drag and drop comes in the form of a great plug-in called Drag and Drop Zones, but taking a few extra steps makes that tool much more powerful.
拖拽通過這款很棒的拖拽搜索地帶（Drag and Drop Zones）插件就可實現，但額外多做幾步就能使這個工具更加威力驚人。