# 组注意事项

[EndNote](http://www.howsci.com/tag/endnote/) 进行组操作时一定记住以下几点：

* 每个[数据库](http://www.howsci.com/tag/library/)最多不能建立超过5000个组
* 每个数据库最多不能建立超过5000个群组
* 每个文献添加到某组只能一次，但是可以添加到多个组中
* 当选择某组时可以查看当前组下的所有文献，所有组可以查看当前数据库下的所有文献
* 可以拖放文献到某个组，甚至可以拖放另一个数据库的某组，这种操作不会在原组中删除文献
* 从一个组中移除文献不会文献本身，只是把文献从该组中删除，文献还是存在于数据库中
* 如果删除文献(拖到垃圾箱)会从该数据库下删除文献
* 从智能组中删除文献同样会从所有组中删除该文献，并且没有提示
* 把文献移至垃圾箱可以把文献从数据库中删除，但是随时可从垃圾箱中恢复该文献，而清空垃圾箱就彻底删除该文献了，不能恢复


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