Hello

All UNA content apps allow to get RSS feed links to share. This setting allows to change a number of items in RSS feed. 

For example, Popular Posts on this site (https://una.io/page/posts-popular) has associated RSS feed https://una.io/m/posts/rss/popular. FireFox browser automatically shows RSS icon in address bar if associated feed is available.

The same with News app.

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Best Regards
Anton