The present paper aims at examining the manuscript recorded as ÖNB Suppl. Gr. No. 45 in the Austrian National Library which was attributed to Janus Pannonius until recently. Firstly, the opposing opinions of J. Bick, Cs. Csapodi and I. Kapitánffy are to be presented in connection with the authorship of the
. Secondly, the arrangement of the word list is described with a focus on scribal errors revealing the mechanics of the transcription of the text. Then glossary notes by different Latin and Greek hands are described and classified with an emphasis on the possible identification of two Greek hands. Finally, an attempt is made to reconstruct the history of the codex partially on the basis of its three bookplates attached on each other by subsequent possessors.