Charlie's right, of course, and we should keep the checksum
field in the header. I do hope that in the future we are
able to make ODS changes a bit more easily, though that will
require some preparatory work.

I don't understand how the mssql torn page algorithm works.
Would somebody explain to me, slowly, and in little words,
how you can flip arbitrary bits on say a TIP page without
causing chaos?

Best,

Ann