Kai771,
Thank you, but the current development version has a separate menu for selecting zoom modes, so those key bindings are no longer relevant (and may even disappear
I have added multi-level hierarchical Table of Contents support (i.e. expandable/collapsable like in Adobe Acrobat Reader) just now. I will probably build a binary distribution tomorrow which everyone can try. It will be available at:
https://github.com/tigran123/kindlepdfviewer/downloads
Update: it is now available, the file is called kindlepdfviewer-27340db.zip