Comments:
The page above begins with the first liturgical rubric mentioning that the people recite the Nicaean Creed of which the incipits are given in Greek and Coptic in the left column, and in Arabic in the right column. 
The next frame includes a liturgical instruction, the deciphering of which turned out to be a very challenging task. In spite of our efforts, and the use of the tools at our disposal in the BAV, we were not able to identify every letter on all lines. Nevertheless, we made a significant step forward. We read many and reconstructed plausibly most of the letters. As a result, four elements could be singled out. (1) Despite the fact that the first line of the liturgical instruction is completely illegible, it most probably informs us of what should happen to the Cross at the end of the first Hour of the Day of Holy Saturday. Maybe the Cross was to be lifted by the priest? (2) We guess that the third line includes the Coptic word for “linen or silk”. Should there be an object (Cross or icon) wrapped in silk or linen? The censers are clearly legible in the Arabic counterpart but not to be found in the Coptic text. (3) Many lighted lamps and candles were most probably carried around. (4) Something had to be done in the church four times. The first thing that comes to mind is the procession round the church. However, we know that the priest goes in procession “thrice round the church” [5] at that hour and not four times. The number ‘four’ is clearly legible as much in Coptic as in Arabic. Does the number ‘four’ refer to the four cardinal points and not to the procession round the church? As one can see, we still have a few questions to be answered regarding the liturgical instruction. 
The second liturgical rubric can be read without problem. First, it informs us that the ṭarḥ should be sung to the melody type ‘Adam’, a well-known praise that begins with the word ‘Adam’. Obviously, the scribe attributes this ṭarḥ to Severus. Again, new questions will need to be investigated.

Bibliography
- Burmester, Oswald Hugh Edward (1933). Le Lectionnaire de la Semaine Sainte. Texte copte édité avec traduction française d’après le manuscrit Add. 5997 du British Museum, vol. I (Patrologia Orientalis, 24,2, Nr. 117). Paris: Firmin-Didot (Reprint Turnhout: Brepols 1985).
- Burmester, Oswald Hugh Edward (1943). Le Lectionnaire de la Semaine Sainte. Texte copte édité avec traduction française d’après le manuscrit Add. 5997 du British Museum, vol. II (Patrologia Orientalis 25,2, Nr. 122). Paris: Graffin (Reprint Turnhout: Brepols 1997).
- Burmester, Oswald Hugh Edward (1967). The Egyptian or Coptic Church. A detailed description of Her Liturgical Services and the Rites and Ceremonies observed in the Administration of Her Sacraments. Cairo: Société d’archéologie copte. 
- Elhage-Mensching, Lina (forthcoming). The Owner Family of a Sahidic–Arabic Holy Week lectionary: Arabic and Bohairic marginalia in the 14th century codex sa 16L, to appear in Acts of the Twelfth International Congress of Coptic Studies, Brussels 11–16 July 2022.
- Le Léannec-Bavavéas, Marie-Thérèse (1998). Les papiers non filigranés. État présent des recherches et perspectives d'avenir. Paris: CNRS Éditions.
- Karabacek, Joseph von, (1991). Joseph von Karabacek, Arab Paper 1887, translated by Don Baker and Suzy Dittmar with additional notes by Don Baker. London: Archetype Publications.
- Zanetti, Ugo (1986). Filigranes vénitiens en Égypte, in Studi Albanologici, Balcanici, Bizantini e Orientali, in onore di Giuseppe Valentini S.J., (= Studi albanologici. Studi e Testi, 6). Florence: Olschki, 437–499.