Hello to all you folks on this forum!
I tried to install Okular document reader via snap on my CentOS 7
cat /etc/centos-release yields
CentOS Linux release 7.9.2009 (Core)
My objective was to read some djvu files from my old archives, which I read could be managed with the OKULAR reader.
To that end I installed okular via snap using the steps from this link.
Only difference is that I did not restart my machine but just logged off and logged on again, perhaps after completing the last step (rather than before).
I see Okular installed in CentOS menu (Applications > Office > Okular) but clicking it does no good.
I also see it installed as Applications > Graphics > Okular (there are two okulars - one for the graphics one, with the identical logo as on this webpage. https://okular.kde.org/
The Applications> office > Okular has a very standard logo replicated for instance in Applications> System tools > Nepomuk
Please help me figure out and correct what has gone wrong with my installation.