And while I was trying to make that work, I corrected some problems in
the .desktop file.
Specifically I wrote down the wrong executable name and
the categories I selected for it didn't validate.
So I focused it on the publishing category.
16min
Gave up on finding system icon for it (though the night/day wheather icons
can be stretched to mean dark and light), and just took the one off the
website.
16min.