where are notebook files ?

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Hello,

I am working with ubuntu on two computers and I use unison to synchronize them. If I understand well, the notebook files are hidden in .sage/sage_notebook.sagenb/home/admin/ every worksheet give a new folder called 0/ 1/ 2/ where you can find files like "cells data snapshots worksheet_conf.pickle worksheet.html" The thing I write and my worksheet are written in the file "worksheet.html". Is it possible to change these names 0/ 1/ to have a real file like interplation.sws ?

thank a lot for some explanations Etienne