BBB write to HDMI display

Hello all.
I want to write or display stuff on an HDMI display on the HDMI port. It is connected and working now, using a USB keyboard I can log in and see it on the HDMI display. But I want to use my laptop as the keyboard and ssh into the BBB an use Cloud9 as the development environment. How do I use the HDMI port? Do I find it in the file structure (/mnt or /media etc.) and write to that? Is there available code that demonstrates using the HDMI port?
Thanks and have a Blessed day!