# Why are Notebook docs different from CLI docs? What is Namespace "Interactive"?

The sage terminal returns the following, but the notebook interface omits the "Base Class", "String Form", "Namespace", and "Length":

sage: NaN?

Type: Expression

Base Class: type 'sage.symbolic.expression.Expression'

String Form: NaN

Namespace: Interactive

Length: 0

File: /SAGE_DIR/local/lib/python2.6/site-packages/sage/categories/commutative_rings.py

Definition: NaN(self, *args, **kwds)

Docstring:

x.__init__(...) initializes x; see x.__class__.__doc__ for signature