cell
Create an array which can hold elements of different types, including non-numeric types.
y=cell(m,n,o,p,...)
y=cell()

Inputs
m,n,o,p,...	Positive integers specifying the size of the cell array to be constructed.
Outputs
y	A cell array of size mXnXoXp.. containing null elements. If no inputs are specified, the output is an empty cell array.