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

How to Install Gnome Shell Extensions With Firefox Ubuntu 18.04 Guide

November 15, 2020 | By the+gnu+linux+evangelist.

Enabling

  1. 4. Enabling GNOME Shell Extension

    Then to Enable GNOME 3 Extension
    First, Navigate to the GNOME Extension Web Page with Firefox.
    And then just Slide the Widget in the Top-Right Corner:

    GNU/Linux Ubuntu 18.04 GNOME Extensions Firefox Installation Guide - Enabling GNOME 3 Extension

    Then possibly to Setup it Access the Extensions Settings on it’s Side:

    GNU/Linux Ubuntu 18.04 GNOME Extensions Firefox Installation Guide - Extension Settings

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