Editions with rsigns tend to either have puncta mora on the second syllable of the first two Sanctus, which is exaggerated, (LU61...) or episemata, which is not found in H (AM34). Sandhofe chose to add quarterbars to indicate some amount of pause between the Sanctus. I kept this idea.

Accent on Ángeli

I wonder if this could be considered 1st mode. Musically it is very obviously mode 2 but a lot of mss have it as mode 1.