My search has been fruitful: I have installed a freeware called vue (
http://vue.tufts.edu/) on my desktop (mac or pc) and imported my dropbox/trunksync/notes folder.
Now I have a map populated with the page names (nodes) of trunknotes, which I can move around, group, connect, filter, etc..
When I clic on a page name item (mar), it opens the corresponding file which I can edit: the changes will reflect within trunknotes after the next dropbox sync.
With the possibility of having an overview of all my trunknotes, I will work on improving and rationalizing my system.
Voilà.
Chris
Ps: to get rid of the many .markdown file extensions wasting real estate on the map, I searched the view file with a text editor for the string
.markdown" layerID= and replaced it with
" layerID=If there are only a few nodes on the map, deleting the extension manually is more convenient.
This doesn't affect the link to the corresponding file.
In order not to mess with trunknotes internals, I prefer to create new notes from my ios device and drag&drop the note into Vue via the "Ressources" window.