what is the 7x7 rule in a powerpoint presentation

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1. Rule of Three PowerPoint Presentation Slide

   

2. Powerpoint 7X7 Rule

   

3. Powerpoint 7X7 Rule

   

4. Powerpoint 7X7 Rule

   

5. Powerpoint 7X7 Rule

   

6. How To Apply the 7x7 Rule in PowerPoint