OnePager 7.1.6 and later support the ability to customize the text that appears in hover boxes. This is useful for displaying long-form text such as notes that don't otherwise fit cleanly in a OnePager chart.
To customize your hover box text, go to Home > Chart Properties > Comment Boxes and change the Display Text to a custom field of your choosing:
Then, turn your hover boxes on using the View tab:
Now, as you hover your mouse over different tasks and milestones, the corresponding text will pop up, and will then disappear as you move your mouse off of the task:
