WORKSHEET FACTS
Here are a few interesting information about the grid we call the worksheet.
Column letters range from A through IV. (After column Z comes column AA, after AZ
comes BA, and so on, up to IV.)
Row numbers range from 1 through 65,536.
The currently selected cell is referred to as the active cell.
When you select a range of
cells, only the cell in the upper-left corner is considered the active cell.
The reference of
the active cell appears at the left end of the Formula Bar in the Name box.
The headings for the columns and rows containing selected cells are highlighted, making
it easier to identify the location of selected cells.
With 256 columns and 65,536 rows, your worksheet contains more than 16 million
individual cells. However, the number of cells you can use at any one time is
limited by the amount of memory your computer has. Although Excel allocates memory
only to cells containing data, you might have trouble actually using all the cells in
one worksheet, no matter how much memory you have.