[cybmole]

I have one book where, on my sony reader, I see a ? in locations where I would expect to see a dash i.e. I see clause?clause.

I go into sigil to try to fix it but it is invisible there. IN both book & code view I only see clauseclause

so it must be some ascii character that does not display in sigil & which shows as ? in ADE. it is also invisible in calibre viewer.

any suggestions on how to make it visible please