I thought I might share this discovery with all you folks. (For once
I can give something back!)

I wanted to put a hyperlink as a data label on a chart. The chart is
actually a timeline with various events and the links go to relevent
documents on the web.

When in Excel the hyperlink appears inert BUT ... when I create a PDF
the link is reinterpreted correctly and the link works.

This is useful to me I hope someone else can use it!

Have a great day!

Steve