The one depicting symbol selection has been removed since it's no longer
deemed useful: the status bar hint on startup should be enough.
There is no need for a separate picture in the project root anymore.
Currently in two translations, Czech and English.
Only the XeLaTeX sources are provided.
This is to be later replaced by a multiplatform, multilingual
DocBook-based documentation, but that requires a bit more work
on integrating it with CMake and all.