If a text object contains more than one line of text, you can center the lines in the selection box. You can also align text relative to the left or right edges of the box.
On the workspace or in the object list, select the text object.
Do one of the following:
If the Text workpane is closed, click Format Text on the Text menu.
If the Text workpane is open, click Format Text at the top of the workpane.