You can add slide numbers and a footer to your presentation.
           
Add automatic slide numbering to your slides
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              On the Insert tab, select Footer > Slide Number. 
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              In the Footer pane, select the Slide Number box. 
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              If you want to avoid having a slide number on the title slide, select Don't show on title slide. 
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              Select Apply to All. 
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              Close the Footer pane. 
Add a footer to your slides
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              On the Insert tab, select Footer > Footer. 
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              In the Footer pane, select the Footer check box. 
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              Enter the info you want in the text box. (For example, you could add a date or a document name or title.) 
 
                         
				 
				