- so far, thus far, hitherto, still
- [2.1] again; [2.2] furthermore; [2.3] moreover; [2.4] besides (used in scholastic debates to introduce an additional point in one's argument)
- [3.1] even as, [3.2] while still
Please pardon my laziness; I have not linked the English adverbs above.
My conjecture: I can imagine a Roman physically pointing to a specific interval or object or moment (which would be 'here' in his/her perspective), to describe everything that had occurred up to that point ('to here' in his/her perspective).