Mathematica Tutorial: Notebooks And Documents - Wolfram Research

10 Notebooks and DocumentsDouble-clicking the bracket of a cell that is not the first of a cell group closes the cell grouparound that cell and creates a bracket with up and down arrows (or only an up arrow if the cellwas the last in the group).Each cell within a notebook is assigned a particular style which indicates its role within thenotebook. Thus, for example, material intended as input to be executed by the Mathematicakernel is typically in Input style, while text that is intended purely to be read is typically inText style.The Mathematica front end provides menus and keyboard shortcuts for creating cells withdifferent styles, and for changing styles of existing cells.