Sony DCR-TRV39 - Manual (Page 218)

Content title:
Editing the name in the text box will let you change the title of content. Even you edit the
content title, the original file name does not change. The maximum characters are 63 letters.
Set as thumbnail:
Put a check mark if you wish to use the image of the thumbnail as the thumbnail of slideshow
button .
'Delete' button:
Deleting a selected thumbnail, which does not delete the original file.
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