Last night I was making a complicated picture on MS paint on my dads computer. Then my dad made me get off cause he was going to bed so I saved the picture. But when I tried opening it up to work on it again there were weird dots all over around the lines and stuff. I can probably fix it by painting over them but I wanna know if I can prevent this from happening. Btw, sorry I posted this here I just couldn't find anything on google.