Creating an interactive flowchart using Adobe Acrobat.

We use flowcharts to map out our company procedures. This works great, but there are some steps within a procedure that require additional explanation. Is there some way I could create a pdf that hides/shows a text box with additional instructions when a user hovers over a step within the procedure?

I tried just using the highlight/notes feature, but the text can't be formatted which makes for a less than ideal user experience. The whole goal here is to make our documentation as easy to consume as possible so people actually use it.

Ideas are greatly appreciated.