Dear Amba, 

Thank you for this extraordinary set of facilities.

I'm interested in what you refer to as "Sanity Checking".  What is that?

As you know, there is a great deal of textual variation lurking behind the nineteenth and twentieth century printed texts that we all depend on.  How do you decide what a "text" is for your systems, since there is so much variation at the granular level?  It doesn't look as if you are editing from manuscripts, unless Sanity Checking includes editorial activity.

Best,

Dominik