One of the most urgent desiderata in the study of Middle and Mixed Arabic is that of databases, or inventories, of linguistic features. A major problem with regard to the development of such research tools is the overwhelming abundance of the material and the highly general, nature of many of its features. This chapter offers some practical and methodological ideas on inventorying such data, with the focus on the issue of norms and standards. It examines a number of very common and widespread features taken from a limited corpus of texts Deir Mar Musa al-Habashi (Dayr Mar Musa al-?aba?i), in the Syrian Desert, near the town of Nabk. Systematical references are limited to five brief accounts of the common denominators of neo-Arabic features in the domains of orthography and phonetics, morphology and syntax and, to a lesser extent, lexical and cultural items. Keywords:Dayr Mār Mūsā al-Ḥabasī; Deir Mar Musa; Inventory; linguistic features; Mixed Arabic features; neo-Arabic features; orthography; phonetics; Syria