Cells
-----


   In Mathematica (X Front End, or on a NeXT, or Mac) cells play a very 
important role.  All the manipulations are cell based.  Even the system outputs
and graphics are cell based.  So we thought a small introduction to cells will
be helpful.

Mathematica documents are called notebooks.  Notebooks contain ordinary text and
graphics, as well as Mathematica input and output.

The information _within_ a notebook is stored in Cells.  Cells vary in style, 
function and kind of information they hold.  They are represented in the 
notebook in the form of right square braces on the right hand side.

Mathematica groups cells automatically, based on style.  This feature can be 
turned off and cells can be grouped manually.  To manipulate cells you need to
select them, and to select cells you need to click on the cell or group brackets
Once having done so you can use various cell manipulation commands.  Copy and 
Paste are most common ones of those.

Just like there are page attributes, there are text and cell attributes in 
Mathematica X Front End.  For eg: you can have a cell attribute changed to make
it a title style.  We hope that we have shown you the basics of cells, and that
you follow on your own.