Thank you Myron,
That is clear and yes, I should update the image files and then get them into Dokuwiki, so we don't need to do this each time.
I will get Sigil and save the output to hopefully fix the errors.
We're used to a fairly extensive Hierarchical
https://opencpn.org/wiki/dokuwiki/doku.php?id=opencpn:opencpn_user_manual]Table of Contents due to IndexMenu, so I tried this in the epub file.
<epub:OpenCPN User Manual>
[[opencpn:opencpn_user_manual|User Manual]]
[[opencpn:opencpn_user_manual:getting_started|Getting Started]]
[[opencpn:opencpn_user_manual:getting_started:opencpn_installation|Installation]]
[[opencpn:opencpn_user_manual:getting_started:opencpn_installation:windows|Windows]]
[[opencpn:opencpn_user_manual:getting_started:opencpn_installation:ubuntu_ppa|Ubuntu PPA]]
[[opencpn:opencpn_user_manual:getting_started:opencpn_installation:linux|Linux]]
[[opencpn:opencpn_user_manual:getting_started:opencpn_installation:fedora|Fedora]]
[[opencpn:opencpn_user_manual:getting_started:opencpn_installation:mac_os_x|Mac OS]]
[[opencpn:opencpn_user_manual:getting_started:opencpn_first_use|First Use]]
[[opencpn:opencpn_user_manual:getting_started:gps_setup|GPS Setup]]
[[opencpn:opencpn_user_manual:getting_started:chart_installation|Chart Installation]]
[[opencpn:opencpn_user_manual:getting_started:setting_option|Setting Option]]
[[opencpn:opencpn_user_manual:getting_started:marks_and_routes|Marks and Routers]]
[[opencpn:opencpn_user_manual:getting_around|Getting Around]]
This does not work at the present time and I would like to make a request that in the future we be able to create heirarchical Table of Contents in this way. Otherwise we will be having to recreate this Table every time we release.