a log box
https://timesed.github.io/dmdm/s1.html https://timesed.github.io/dmdm/2017040510164623.html
https://timesed.github.io/dmdm/20170405_105448.htm https://timesed.github.io/dmdm/20170405_105227.htm https://timesed.github.io/ https://timesed.github.io/