ChatterBox

I was gone for a few hours and just got to this:

Graphics 800,600,0,2
Global x=5
For y=5 To 320 Step 5
Plot x,y
Next
For x=5 To 240 Step 5
Plot x,y
Next
Delay 5000
End

When I do something wrong, I can't close the window and I have to open up Task Manager and do it from there... And when I close the window with Task Manager the IDE shuts down and I didn't have time to save...