Reminders in toolbar navigator?

l10n
#1

Hi

While re-translating the writer navigator toolbox(*), I got puzzled by
the "Reminder" button. What is this thing and where/how can I see it at
work?

Thanks

#2

Thanks to Miklos Vajna

An obscure feature of Writer...

https://wiki.openoffice.org/wiki/Documentation/OOo3_User_Guides/Writer_Guide/Using_the_Navigator#Setting_reminders

Olivier