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Add text to the object.
Right click the Auto Shape and select "Add text" from the pull-down menu. A cursor will appear in the center of the object. Type the desired text and click enter. To change the text formatting, select the text and choose from the available text formatting options on the Home tab. Choose a pre-formatted style from the Styles menu; change the alignment, spacing or indentation from the paragraph menu; and adjust the font, color, size or effects from the Font menu, located in the Home formatting toolbar. Text has been added to the Auto Shape.