This might be just a supplemental entry adding to an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
. I. AddNe gefiólle hé nó (nǽfre, v. l. ) on swǽ opene scylde, Past. 235, 2. Ne gewurðe hit ná on lífe, Hml. S. 25, 660. II b. add :-- Hé hiene geniédde hé sealde Rómánum þreó hund gísla; and hé þéh siþþan ná þý lǽs ne hergeade on Rómáne ad deditionem coactus, trecentos obsides dedit. Enim cum inprobos non cohiberet excursus , Ors. 5, 7 ; S. 228, 31.
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A Combined List of Abbreviations.