Editiones Arnamagnæanæ. Series B - 01.06.1962, Side 174

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The preposition ur is always so written, e.g. I3, but
note orskurd 3617.
In dyrunum 2814, tyglum 247 and tyglana 248, the form
with i-mutation has been carried through the declension
(cf. Bandle 262).
The svarabhakti vowel is nine times written in full,
allur 34, dalur 812, heimskuligur 96, rennur 2316, allun 272,
fullur 272, Oddur 2913, finnur 2914. Elsewhere interlinear
r rotunda is used. There are no examples of the use of
r alone.
y is replaced by i in all the recorded forms of the verb
þykkja, e.g. þikia 1310, þiki 911, þiker 102, þikiunst 1310.
The i-mutation of á is always represented by œ, e.g.
lœtur 99. The same vowel is of course used for old œ, e.g.
brcedur 3528.
ö is generally represented by o, e.g. in all forms of the
older ngkkurr, nockud 55, nockrar 13°, etc., odru l9, log 46,
onguann ll2, ortnn 145, and many others. There are, how-
ever, two examples of spellings with au, laug 44 and
aunguan 510. The latter instance may represent the ordinary
Modern Icelandic pronunciation of ö before -ng as [oy]
(cf. Bandle 78).
The ending -er is written in full about twenty times,
aller 210 and eleven other times, þesser 1011, misser 1610,
renner 227, sigler 2913 etc. Generally a symbol is used
and this is expanded in the edition as -er. It should be
noted that the same sign is occasionally used for r, e.g.
in ert 74, er 372.
e is commoner in other endings than i but many forms
with i occur. There does not seem to be any system
behind the choice of e or i since the same form of the
same word is often found with both spellings, e.g.
Norege l1, Noregi l10, kongi 27, konge 711, sette l4, setti 44.
i is always found in the ending -lig- e.g. dreingiliga
303, gladliga 308, heimskuligur 96.
e is preserved in kuikendi 2314 whereas erindi 3533 has /.