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            The database owns speed dial information. This is a mapping between a
            single digit integer and a telephone number, allowing the user to dial a stored
            contact using one key.
            CContactDatabase::SetFieldAsSpeedDialL() sets a field
            containing a telephone number as a speed dial field. The field is identified by
            aFieldIndex within the contact item
            aItem. It is assigned a speed dial position between 1 and
            9 inclusive. CContactDatabase::GetSpeedDialFieldL()
            returns the ID of the contact item whose telephone number field is mapped to
            the speed dial position specified. This function is provided so that
            information may be displayed about a contact item whose telephone number is
            being dialled using speed dialling.