A quick search give me no results about c0 
During debug my mod's i play, code & desing at the same time.
Or playing together, SplitScreen,... BlaBla
(By the way visit my sneak peek resourcepack we play)
The Titlebar disturbs....really!
Instead of a mod :) (less is always better)
The built-in Lightweight Java Game Library provide a feature.
You can specify a JVM property, before you launch MineCraft.
-Dorg.lwjgl.opengl.Window.undecorated=true
Now ur JVM-props should be something like this:
Sample:

Finish....launch Minecraft!
Dev notes:
During debug my mod's i play, code & desing at the same time.
Or playing together, SplitScreen,... BlaBla
(By the way visit my sneak peek resourcepack we play)
The Titlebar disturbs....really!
Instead of a mod :) (less is always better)
The built-in Lightweight Java Game Library provide a feature.
You can specify a JVM property, before you launch MineCraft.
-Dorg.lwjgl.opengl.Window.undecorated=true
Now ur JVM-props should be something like this:
Sample:
Finish....launch Minecraft!
Dev notes:
Spoiler - click to reveal
Or by setting it in your code :)
System.setProperty(" org.lwjgl.opengl.Window.undecorated", "true");
Visit: https://www.lwjgl.org
