網上下載開源軟件，經常看到“Portable Edition"或者"Portable Version". 其含義不是很清楚。經過搜索調查，原來就是我們常說的”綠色軟件“。

定義引用如下：

Defining features

There is no exact specification of what a portable application is, but the following list contain the properties that are usually assumed when talking about portable software:

• No installation. The program is delivered in a zip archive that you only need to extract into a folder of your choice (the “program folder” below) to “install” the program. (無須安裝)

• This program folder contains everything needed to run the application. No files need to be installed on the host computer first. The exception to this are common runtime files, such as .Net, Java and Visual Basic runtimes, that are usually already installed and in a sense can be seen as part of the runtime environment that everyone already have. (程序目錄包含一切)

• All application settings are saved inside the program folder. Thus if the program folder is moved, settings come along too. (配置也保存程序目錄）

• The application does not save or change anything on the host computer outside its program folder. This includes the Windows registry.（程序不會動自己目錄之外的任何東西)

關于Portable一詞，還有一處網站說明如下： The Latin word “port” means to carry. Portability is the attribute of being easy to carry from one point to another or, in this case, from one operating system to another.
（意思就是便攜。很容易從一個地方那個搬到另一個地方。或者從一個系統搬到另一個系統)

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