Individual cells can be hidden by selecting the cells and selecting the Hide command from the Display Menu. All hidden cells can be made visible again by selecting the Show command from the Display menu. Layers, rows, and columns can also be hidden by selecting with Select i, Select j, and Select k tools.
In many cases it is necessary to hide all cells but a certain set of cells. A quick way to accomplish this is to select the set of cells using any one of the cell selection tools and to select the Isolate command from the Display menu.