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

How to Install Lexmark Printer on Debian Distro

GNU/Linux Debian Lexmark Printer Setup – QuickStart Guide

Hi! The Tutorial shows you Step-by-Step How to Install Lexmark Printer in Debian GNU/Linux Desktops.

And to Install Lexmark Printer in Debian you need to Setup the Proprietary Driver.

Especially relevant: the Driver may Not be Available for some Inkjet Legacy Printer Models.

But if Not found then for some Lexmark Printer Model you may check instead the Gutenprint Driver Suite Setup.

How to Install Lexmark Printer Driver on Debian - Featured

GNU/Linux Debian Lexmark Printer Driver Installation Guide