It looks like two lines of scribbles to me. It resembles the way children write when they are shown how to write their names in cursive but they don't quite know how to do it yet.
The T-O shape is much more even and controlled, probably a different person from whoever added the scribbles. AStobbart, yes, the T-O shape is quite common in medieval manuscripts.
The T-O shape is much more even and controlled, probably a different person from whoever added the scribbles. AStobbart, yes, the T-O shape is quite common in medieval manuscripts.