Nikon D70s Manual page 146

The HELP Button
To view help on Custom Settings, press the (HELP) button when an item
is highlighted in the CSM menu or when the options for a Custom Setting
are displayed.
Custom Setting R: Menu Reset
To restore Custom Settings to default values,
highlight Menu reset in the CSM menu ( 135)
and press the multi selector to the right. Press the
multi selector up or down to highlight an option,
then press to the right to make a selection.
Option Description
No
(default) Exit menu, leaving settings unchanged.
Reset Restore settings to default values.
Two-Button Reset
Custom Settings are not reset when a two-button reset is performed ( 111).
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