Casio YC-400 User Manual page 70

Using Image Files Stored on the Computer's Hard Disk in a Presentation (PC Image Mode)
I To add an image to a playlist from the preview list area using copy
and paste
1.
In the preview list area, select the thumbnail of the image file you want
to add to the playlist.
You could also select multiple files for this procedure, if you want.
2.
On the [Edit] menu, select [Copy].
3.
Click inside of the playlist area to make it active.
4.
On the [Edit] menu, select [Paste].
This adds the image file you selected in step 1 to the playlist, so it is located above
the image whose thumbnail is currently selected.
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