Yamaha Electone EL-900 Owner's Manual page 116

This operation automatically erases any
voice that had been previously saved to
the selected User voice number. You
should check the User voices (page 31)
before saving a voice to make sure that you
will not be erasing any important voices.
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(If necessary) Press the Data Control buttons below [Edit Name] to
give a name to the voice you have edited.
The method to edit the name is the same as the one for the song name
in the M.D.R. section, See page 92 for more information. Up to 16
characters can be used in this case.
4
Press any of the Data Control buttons below [Save] to save the voice,
or press any of the buttons below [Cancel] to abort the operation.
When the voice has been saved, the message ﾒCompleted!!ﾓ
temporarily appears.
This Save page shows the same voices as the last page (USER) of the
dotted buttonsﾕ Voice Menu.