Pagination preview/diagnostic summary

[gmbecker]

E.g.:

page i: (height in lines, width in characters, number of non-repeated rows, number of unique col)
assuming page allows for 90 x 130 characters area

vertical
1:(....)
2:(...)
3:(...)

vertical & horizontal
1:(...) 2:(...)
3:(...) 4:(...)
5:(...) 5:(...)

cases:
i: (80, 125, 50, 4) -> good

j:(20, 120, 2, 4) -> title, references, pagination issue

k:(80, 40, 40, 1) -> issue with a column: reformat?

[Melkiades]

I think this would be great to have! I am always wondering how pagination is affected by what we do and I think we need a bit more clear testing of line by line for pagination