[invalid]; please ignore, apologies
Sorry, ignore this. (I already closed it.)
Can't delete it, unfortunately.
--
It was for something that was missed in the first run-through (alerted by someone I know who isn't a long-time user like me) but is actually there.
FYI: Teaching users to edit palettes on disk is quite heavy for a beginner. Maybe forward them to the next section on the Fill & Stroke panel.
P.S.: Not a tutorial bug, but palette editing needs a UI. I don't want to edit on disk files either! Especially not when it's specific to a file / project.
Edited by Alastair McBain