|x| appears at end of field contents

I'm having an odd problem that I can't seem to track down.
I have a Custom Field for a text summary of articles. When the field contents are displayed, an |x| appears at the end of the contents.
I'm guessing this is a placeholder for an empty database field, but I'm stumped as to why it's appearing.
I've checked the style, it's fine. I've checked the field -- I don't see anything amiss.
Any ideas as to where else I should be looking?
Thanks,
John
I have a Custom Field for a text summary of articles. When the field contents are displayed, an |x| appears at the end of the contents.
I'm guessing this is a placeholder for an empty database field, but I'm stumped as to why it's appearing.
I've checked the style, it's fine. I've checked the field -- I don't see anything amiss.
Any ideas as to where else I should be looking?
Thanks,
John