Notebooks can be organized into a directory hierarchy. To
create a new directory or to add or to move a notebook to a directory,
simply give the notebook a name with slashes to indicate the directory
structure.
For example, the notebook name
dir1/dir2/MyNotebook will create a notebook named
MyNotebook inside a directory dir2, which
is inside a root directory dir1.
Optionally enter Description and Tags.
Click Create.
This creates a new notebook which opens to a blank paragraph page.