Nikon D3S User Manual page 206

A
Use Slot 1
Slot 1 is used when saving custom Picture Controls to a memory card or
copying custom Picture Controls to the camera. Cards in slot 2 can not
be used.
A
Saving Custom Picture Controls
Up to 99 custom Picture Controls can be stored on the memory card at
any one time. The memory card can only be used to store user-created
custom Picture Controls. The preset Picture Controls supplied with the
camera (Standard, Neutral, Vivid, and Monochrome) can not be
copied to the memory card, renamed, or deleted.
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