Hi,
My team uses version X5, so we can't use the method that
Colum described. Instead, we create a separate topic, then insert
popup links to that topic.
Suggestions:
The popup topics can use a different CSS (for example, giving
them a lightly colored background).
Popup topics may or may not include a heading (H1 tag).
You can save all the popup topics in a separate folder.
You can create a Glossary topic using these popup topics. (We
don't use RH's glossary functionality, due to its various
deficiencies.)
Hope this helps. It works great for us.
Regards,
Eileen