How to unset reminders in LibreOffice Writer

To remove these, just return to the menu; unclick that box.

       In order to see all the markings, go to the 'edit' menu; select the
view you wish to use -
           this can be set at anytime without changing the document itself.

       BTW - your English is fine.

       BTW 2 - maybe others would have responded, but were unable to ignore
your offensive tag-line;
            is Joe your name? - don't denigrate this nice name.

Thanks, anne-ology.

My userid is bissjoe, which is the first four letters of my family name, and
my first three letters of my given name (Joël or Joel, whether you can see
diacritics or not). I am truly sorry if I offended anyone.

I am not sure to understand your suggestions (but do not see it as a
reproach; I am quite pleased that somebody replied).

The Navigator is the sidebar where the dynamic table of contents (TOC) is
displayed. Above this TOC, there are many buttons, one of which being the
"Set Reminder". This is not a button with a two-state (one for pressed and
one for unpressed). So this does not seem the way to unset a reminder. In
fact, if I click this button a second time on a paragraph where I have
already set a reminder, it adds a second reminder for the same paragraph!
This is obvious because if I click many times the "Next Object" (replace
Object with the proper object type, like Reminder), the cursor stays at the
same place twice.

Your second suggestion is to go the Edits Menu. Are you sure you don't mean
the Display Menu? In the Display Menu, there is a menu item "Caractères non
imprimables" which I have translated as "Nonprintable characters".
Unfortunately, this option uses special characters for spaces and end of
lines, but does not allow to see the reminders. Maybe there is an option
somewhere to tell LibreOffice Writer that I want to see reminders, but I
have not found it yet.

Again, thank you for your replay,
Joel