Praise to the author's Rdzogs chen master, it ends with an apology for the unhappy 'hand' (sug pa) of the scribe, requesting Zhang rtsun's forbearance. Honestly, I've seen much worse. At the beginning it looks more like a lineage prayer with two lines devoted to each lineage holder. Here I see names like Rje btsun 'Khor lo grags pa (must mean the contemporary of Abhaya, so early 12th cent.), Lha rje Ma thog yang 'bar, Rje btsun Rngog Kham po che, Rje btsun Nyi ma zla ba, etc. (Snang ba don grub is an unusual name!). (Dan Martin's Hurried Notes)