Pentax Optio T20 Operating Manual page 33

Using the Index Function for Quicker and Easier Playback
Touch [Index] on the LCD monitor during recording to add an index to the
current sound file. By adding an index to a point in the sound file, you can
quickly jump to that position during playback at any time.
• Indexes cannot be added during playback.
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Play Back the Sound
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Adding a Voice Memo to a Picture
You can add a voice memo of up to 60 seconds to a picture
you have already taken to describe the picture or how it
was shot (p.107).
After recording, press the Q button to switch
to Playback mode.
In Playback mode, you can fast forward, fast
rewind, and adjust the volume. When indexes
are added during recording, you can fast
forward or fast rewind to each index (p.84).
Enjoy Recording Sounds
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