I found two versions of unicode.4ht in \ht-fonts\iso8859\1
one in D:\texlive\2016\texmf-dist\tex4ht\ht-fonts\iso8859\1\charset\ the other in D:\texlive\2016\texmf-dist\tex4ht\ht-fonts\iso8859\1\charset\uni\ Their content is not identical, the one in charset has two extra lines: 'fi' '' 'fi' '' 'fl' '' 'fl' '' I'm not quite sure if both are really from the texlive installation -- perhaps one of them remained from a test I did to compare the location with the one from miktex, but I mention it anyway just in case. Also I would like to know which one is the correct one. -- Ulrike Fischer http://www.troubleshooting-tex.de/