Redmine demo

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To create a tooltip, add the data-toggle="tooltip" attribute to an element.

Use the title attribute to specify the text that should be displayed inside the tooltip:

<a href="#" data-toggle="tooltip" title="Hooray!">Hover over me</a>
Note: Tooltips must be initialized with jQuery: select the specified element and call the tooltip() method.

The following code will enable all tooltips in the document: