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

How to Install Processing 4 on GNU/Linux Distros

GNU/Linux Installing Processing 4 Guide

Hi! The Linked Tutorials Show You Step-by-Step How to Install Processing 4.x in GNU/Linux Desktops.

And Processing for Linux is a flexible Software Sketchbook and a Language for Learning How to Code within the context of the Visual Arts.

How to Install Processing 4 on GNU/Linux Distros

GNU/Linux Processing 4 Installation Guide