Smaller demos are often known as intros. They are typically limited to between 4 and 64KB in size. Intros were originally used as tags by cracking groups on computer games and other software. The purpose of the intro was to advertise cracking and distribution skill of a particular group. Later it developed into a stand-alone art form. Many demo and intro groups disassociated themselves from the cracking and copying scene, although the same people could still be involved in it.
Read more about this topic: Amiga Demos