Ricoh CAPLIO G4 WIDE - Manual (Page 149)

Chapter 2 Section 3 Displaying Thumbnail Images (How to Use DU-10x)
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How to Rename an Image
To rename an image shown on the Thumbnail
Display screen, follow the steps below.
Select an image you want to rename.
On the image you selected, right click and
choose [Rename] from the menu.
When the [Rename] dialog box appears,
enter the new name for the image.
Click [OK].
Renaming an image in Thumbnail View
You can rename an image shown on the Thumbnail Display screen.