I think I know what`s wrong. If you use "print", it will print the word under the last word every loop, and using the "cls" command, you clear what has been written. So try this:
rem setup screen
sync on
sync rate 30
backdrop off
rem main loop
do
rem print text
print "Hello crazy world!!!"
rem user help
center text 320,400,"...press spacebar..." : if spacekey()=1 then exit
rem refresh screen
sync
rem end of main loop
loop
rem setup screen
sync on
sync rate 30
backdrop on
color backdrop 0
rem main loop
do
rem print text to screen
set cursor 10,10
print "hello crazy world!!!"
rem end program
center text 320,400,"...press spacebar..." : if spacekey()=1 then end
rem refresh screen
sync
rem end of main loop
loop
you have to turn the backdrop on and every loop you have to set the cursor so it prints at the same place. Or do it the easy way:
rem setup screen
sync on
sync rate 30
backdrop on
color backdrop 0
rem main loop
do
rem print text using text command
text 10,10,"hello crazy world!!!"
rem print crazy at random points for fun
for t=1 to 10 : rem the amount of crazy texts to be printed...
center text rnd(600),rnd(500),"CRAZY!"
next t
rem end program
center text 320,400,"...press spacebar..." : if spacekey()=1 then end
rem refresh screen
sync
rem end of main loop
loop
Oooooops!!! I accidentally formated drive c.