nihilist-space-cow 1: april 2015. index.html only NSC ver 2: april 2016. added ephemeral, moo, freeze, modern,
storage, storage1,together,together2,openbook, girls,nagato NSC ver 2.5: may 2016: chafee,ears, new css to for lower resolution
displays NSC ver 3.0: started work august 2017. new: status revised: delivery, ears, freeze, moo edited
NSC ver 4.0: May 2021: new: park, step2, praise, continue, methods ,belief. renamed: freeze > robo tableofcontents> contents. ephemeral > regular defunct: moo, nagato, storage. many pages updated. chafee remade, many icons changes.