save all emacs buffers

[Umi]

Is it possible that save the emacs buffers to use later?

Mozilla firefox browser can save all tabs with 'Bookmark All Tabs'. So I
can back to the task without some saving.

Is it possible in emacs, many buffer is opened in emacs

I need to turn off the computer now. I need a tool like 'Bookmark All
Tabs' to continue the task later without to save each buffer and to note
each buffer's name.

thanks