Use the Align Objects pull-down menu to align objects along axes. You can align an object along a horizontal axis using its left or right edge or its center point. You can align an object along a vertical axis using its top or bottom edge or its center point. The alignment option you select remains in effect until you change it. A dark border around the icon in the palette indicates the current alignment option.
To repeat an alignment operation on another group of objects, press <Ctrl-A>.
Macintosh <Command-A>, Sun <Meta-A>, and Linux <Alt-A>.
Complete the following steps to align objects.
Select the objects you want to align.
Select the Align Objects pull-down menu, located next to the Text Settings pull-down menu on the toolbar on the front panel and block diagram.
Select from the following options:
Top EdgesAligns all top edges of the selected objects with the topmost object.
Vertical CentersAligns the objects at the point halfway between the topmost and bottommost objects.
Bottom EdgesAligns all bottom edges of the selected objects with the bottommost object.
Left EdgesAligns all left edges of the selected objects with the object farthest to the left.
Horizontal CentersAligns the objects at the point halfway between the object farthest to the left and the object farthest to the right.
Right EdgesAligns all right edges of the selected objects with the object farthest to the right.