贴齐网格
指定是否仅在网格点之间移动框架、绘图元素和控件。若要只为当前操作更改吸附网格的状态，请在拖动对象时按住「控制键Ctrl 键」。
Automatically aligns objects to vertical and horizontal grid lines.
Choose .
From the tabbed interface:
Choose .
On the menu, choose .
From the tabbed interface:
Choose .
On the menu, choose .
From the tabbed interface:
Choose .
On the menu, choose .
To override this feature, hold down the OptionAlt key when you drag an object.
