A placeholder will appear with a solid line around it that does not display in the presentation when it is running. 
What is dotted line?
- Lines are exceptionally valuable in introductions and drawings in common. You'll be able utilize lines as connectors to speak to charts, interface thoughts or clarify a particular topic to an gathering of people.
-  In PowerPoint, you'll embed lines and these lines can utilize a distinctive line type. 
- Dotted lines are often utilized as a separation of the plain line sort. 
- In case you wish to embed a dabbed line or dashed line in Microsoft PowerPoint at that point you wish to do the taking after assignments. 
- Dotted or dashed lines can be valuable on a few introduction clarifications which can recognize the plain line sort. 
- And like every other Office apps, you'll make dabbed or dashed lines in PowerPoint by yourself
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