I'm honestly feeling a little demotivated, to point I want to 3d model for some time, but heres my HELLO WORLD program. The only problem is I can't find the way to not make instruction text move. >_<
So smilebasic has a sort-of autoscroll function built into the PRINT command. So when the program prints "HELLO! : D" over and over, eventually it reaches the bottom limit of where smilebasic can print and it scrolls all of the text up. To fix this, you just need to fix the LOCATE command just before (at line 14). Just include a "Y" value and it'll work.
do you want both x and y to move?
another way to do it is if BUTTON() AND #DOWN THEN X=X+1:Y=Y+1 (OR -1)
Also you cant do x,y-1 or anything like that, they have to be separate like x+1:y+1 but you cant do that, just do x=x+1:y=y+1 (and if in an if do two ='s)