Ok, I had created a backup of the file I was working - "common - Copy.config" and apparently the editor was also reading that. I removed it from the diretory and the duplication goes away - thanks.
No, I am the only developer and prior to adding these lines
<item text="Arial Narrow" html="<font face='Arial Narrow'>Arial Narrow</font>">Arial Narrow</item>
<item text="8pt" html="<span style='font-size:8pt'>8pt</span>">8pt</item>
<item text="9pt" html="<span style='font-size:9pt'>9pt</span>">9pt</item>
<item text="10pt" html="<span style='font-size:10pt'>10pt</span>">10pt</item>
<item text="11pt" html="<span style='font-size:11pt'>11pt</span>">11pt</item>
<item text="12pt" html="<span style='font-size:12pt'>12pt</span>">12pt</item>
the file was untouched.
The 2 lines you point out format the same but are not duplicates at all nor was that the duplication in my images that I was concerned about.
So...the question remains, can I enter item lines formatted per your online help files (eg, <item text="9pt" html="9pt"/>) or do I need to use the more complicated item strings above? Will the simply format work correctly in the editor?