Nice to have
If you try to copy something from the old help and paste it into the CKEditor, a lot of formatting doesn't work like headings or bullet points. Also, copying images leads to error messages in the developer console and it does not work.
In the old help, very many tags are bracketed with an <a> tag that has no valid href. In Tl-Doc this creates nonsensical anchors, which are now filtered out by only copying <a> tags with a href set. Also, the paste filter prevented some tags from being copied such as headings. Additionally, <b> tags are now changed to <strong>.
To copy images, the HTTP response header must be extended on the source server from which the images are copied to allow copying images from foreign URLs:
HTTPServletResponse httpResponse = ...;
From the help of https://apps.top-logic.com/project copy the content of a page and paste it into TL-Doc. The pages should have the same or similar formatting, especially the headings, bullet points and other highlighting such as bold or italics.