Hi, after a long hiatus, I finally decided that the glitches in other apps (no names) started to bite too deeply into my workflow. So I Added Zettlr to my Debian sources, connected with WebDAV to my cloud, and dragged my md files into a workspace. Now I have my unfinished 500+ page book in Zettlr.
I customized the CSS mostly for screen aethsetics and poor eyesight, and once it's ready, export it to clean text, and import it into Scribus for final layout and styling.
Zettlr always struck me as suited more for a doctoral thesis with full citations, biblios, following rigorous academic standards, but I wonder if it can be configured for my long form writing approach. Here is 
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I'd appreciate some tweaks and guidance on how to use Zettlr efficiently for this type of longform.
My thanks also to the MOD @nathanlesage for taking me off a mistaken 20 year suspension. I would have been released 3 weeks after my 88th birthday 🙂