Except as otherwise provided herein, Rule 58 F.R.Civ.P. applies in cases under the Code. Every judgment entered in an adversary proceeding or contested matter shall be set forth on a separate document. A judgment is effective when entered as provided in Rule 5003. The reference in Rule 58 F.R.Civ.P. to Rule 79 (a) F.R.Civ.P. shall be read as a reference to Rule 5003 of these rules.