Sebastian

>
> gracious. the signs are all around us, I see it now.

For behold, there arose a prophet in the land of Oxon...

>  3 TeX the archival-files-which-must-format-identically

Note: That is not at all the same meaning of archival as my usage re maths.

>
> which is the important bit? which is the "unique public de facto
> archival and communication language", exactly?

You forgot

6 None of the above


chris