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When hovering over one of the formatting buttons, tooltips (with shortcuts if applicable) show after a user has hovered for 800 ms.
NOTE: there is a separate ticket to complete the UI for displaying shortcuts in tooltips
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Headings Button
For the Headings control, the formatting controls are temporarily replaced with the heading options (H1-H6)
Tooltips display here as well after a user has hovered for 800 ms
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