之前一直不明白zen cart产品目录上那个status属性黄黄的那一块是什么意思，也不懂怎么去更改它，上网查了一下，以下是官方解解：
What is a “Linked Product”?
A linked product is a product that is set up to display in more than one category.
This means that you only have to edit that product in one place in order to have changes take effect everywhere it is displayed. If you put it on special in one place, it will be on special in the other place/category as well.
Linking also means that you’ll not see the same product appear more than once in a given list of products.
If you make a “copy” of a product, instead of linking it, then you will have two distinct and separate products which would require separate editing if you were to make changes later. Specials would affect one and not the other, unless you applied the Special to both individually. In the case of a copy, you might end up seeing both versions of the product appearing in various product lists.
总算明白，如果产品是linked状态的话，表示这个产品在不同的目录也有出现，而对网站来说它还是一个产品，就像一个用户可以隶属于不同的用户组一样，它们在数据库中只有一条记录；而非linked状态的两个相同产品，在数据库中有两条记录，系统会认为它们是不同产品，虽然产品名称和型号等信息是一样的；这个link功能很好用，灵活
至于怎么设置两个相同产品为link状态，在产品的copy to动作时可以选择的，选择Linked，或Duplicate（复制品）
