GNU/Linux GNOME 3.34 Enabling Try Icons Guide
How to Add/Enable TaskBar in GNOME 3.34 GNU/Linux desktop – Step by step Tutorial.
And by Adding GNOME 3.34 TaskBar Icons you’ll be able to Manage Easily the App Running in Background.

Contents
$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }