对齐（对象）
将选定的对象相互对齐。
如果某个选定的对象作为字符锁定，则有些对齐选项将无法使用。
并非所有对象类型可以一起选择。并非所有模块 (Writer, Calc, Impress, Draw) 都支持全部的对齐类型。
左对齐
Aligns the left edges of the selected objects. If only one object is selected in Draw or Impress, the left edge of the object is aligned to the left page margin.
水平居中
Horizontally centers the selected objects. If only one object is selected in Draw or Impress, the center of the object is aligned to the horizontal center of the page.
向右对齐
Aligns the right edges of the selected objects. If only one object is selected in Impress or Draw, the right edge of the object is aligned to the right page margin.
靠上对齐
Vertically aligns the top edges of the selected objects. If only one object is selected in Draw or Impress, the top edge of the object is aligned to the upper page margin.
垂直居中对齐
Vertically centers the selected objects. If only one object is selected in Draw or Impress, the center of the object is aligned to the vertical center of the page.