ninems/ninems.tex
2019-07-04 Christian Urban spell check
2019-07-03 Chengsong another changes. have written more. but havent typed them. tomorrow will continue.
2019-07-03 Chengsong s?
2019-07-03 Chengsong s
2019-07-03 Chengsong example
2019-07-03 Christian Urban proof reading
less more (0) -10 -6 tip