This widget allows you to add come text with title, subtitle and icon to the sidebar.
Here is a screenshot of how it looks from the back-end:

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Choose heading icons tab and click "Add new icon":

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Click "Insert into post":

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Thereafter your icon will appear in the list of used icons here:

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And also you will see it in the widget's Icon field

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Here you can see how this widget may look like on the front-end

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