Canon EOS 1Ds Software Instructions page 58

Specifying the Preferences
● The buttons listed below are displayed in each of the tab sheets. They
function in the same way in each sheet.
11 Restores the default settings for all the parameters in the currently displayed tab sheet.
12 Discards all the settings, restores the parameters to their original values and ends the
procedure.
13 Applies the specified parameters, closes the [Preferences] dialog box and ends the
procedure.
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