This program is called fedora gnome-software
https://raw.githubusercontent.com/gnome-design-team/gnome-mockups/master/...
it contains annotations for each category and program. e.g.
https://raw.githubusercontent.com/gnome-design-team/gnome-mockups/master/...
and a separate program, e.g.
https://fedoramagazine.org/wp-content/uploads/2014/06/gnome-software-addo...
or
https://ryanlerch.fedorapeople.org/musique.png
Tell me, please, where the English text files (as I understand
appdata.xml) to each program? and it is possible to add or replace
screenshots?