Screen 0

[TerryRitchie]

It's the only screen you'll ever need.

Pete

 - This thread is closed to further posts. j/k

It's the only screen PETE will ever need. FTFY

It's the default text screen that QB64 (and QuickBasic) uses at start up.

PRINT "HELLO WORLD"

The window with the black background is text SCREEN 0. It only allows text, no graphics. To leave SCREEN 0 you need to initiate a graphics screen:

SCREEN 13 ' legacy 320x200 graphics screen

SCREEN _NEWIMAGE(800, 600, 32) ' modern 800x600 32bit graphics screen