The split of lessons with more than 2,000 words doesn’t work properly.
The automatic split should not split paragraphs. Especially in novels this is strange. Also the “.” is missing at the end of the first file.
Example: If there is something like:
Peter said “abc abc.” and moved away.
The split leads to:
Peter said "abc abc (in File 1)
" and moved away. (in File 2)