Hi Fay,
Thank you so much for your quick reply. The Xerte isn't public so I am afraid I can't provide a link.
I checked punctuation and the spelling but what I hadn't checked is the source, which I thank you for suggesting.
The page type (page 7) where the problem occurs is interactivity > Categories. the problem occurs in the page text area and the text appears fine with correct punctuation (a comma after the word) and spelling. The same word is fine on page 6 with the glossary displaying. Page 6 is a Text > Plain Text page.
When I looked at the source on page 7 (Interactivity > Categories) I noticed unexpected code which is: about rheumatoid arthritis,
I don't know if the creator copied and pasted the text from Word directly (I inform staff not to do that).
I have duplicated the page 7, so that there are two page 7. I have removed the unwanted code in the source, so that it now displays as: about rheumatoid arthritis,
The glossary text now works.
So, i wonder if this is a bug?
Thanks for pointing me in the direction of checking the source, i hadn't thought of that.
Keep well and thanks for the support.
Anne