在创建用户时，如果没有指定sugroup, AIX就采用默认设置all。
When a user is created and no sugroup is specified, AIX defaults to ALL.
配置完Shutter之后(或者希望采用默认设置)，可以按以下方法之一捕获图像。
After you finish configuring Shutter (or if you just want to use it out of the box), you can capture an image in one of the following ways.
在你最喜欢的设计工具中使用直线工具时，只需要采用默认设置，你就能画出特定两点间的完美直线。
When you use the line tool in your favorite design software, with the default Settings, you get a perfectly straight line from point a to point B.
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