land-mearc
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.
land-mearc
AddMín is Galaaþes landmearc meus est Galaad , Ps. L. 107, 9. Þis sind þá landmearca tó Byligesdýne, C. D. iii. 274, 31. Þegnas and ceorlas habbað landmearke, hú mycele má geríst hyt seó tíd hæbbe mearke, Angl. viii. 326, 12.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.