GNU/Linux GNOME 42 Enabling System Tray Guide
How to Add/Enable System Tray in GNOME 42 GNU/Linux desktop – Step by step Tutorial.
And by Adding GNOME 42 System Tray Icons you’ll be able to Manage Easily the App Running in Background.

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$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }
How to Add/Enable System Tray in GNOME 42 GNU/Linux desktop – Step by step Tutorial.
And by Adding GNOME 42 System Tray Icons you’ll be able to Manage Easily the App Running in Background.