Jittery text in Flash

• Grab the brush tool. Draw the word "jitter," or a brief phrase. Circle it.
• Press "F7" to add a blank keyframe
• Find and click the onion skin button at the bottom of the timeline (second from left in a group of five)
• Use the brush to write over your first word, now faintly visible as an onion-skinned ghost image. It should be close but not match perfectly.
• Press "F7" to insert another blank keyframe. Write your word or phrase one more time.
• Choose Control>Loop Playback from the drop-down menu
• Press Enter to see your movie