Sets the loop SUB rountine, that's continuously called after the main program end.
By default, GLBasic sets it to "GLB_ON_LOOP".
would freeze the browser.
GLOBAL text$ = "Hello World"
// init ...
// SUB/FUNCTION or new file end the "main" rountine
PRINT text$, 0, 100 + SIN(GETTMERALL()/10) * 100