explains how a range of cells is labeled.
Since letters represent columns and numbers represent rows, a range
indicated by a changing number and a unchanging letter is a range
highlighting a column. Similarly, if
the letter is changing and the number is static, the range selected contains
a row of cells. A box range, an area
containing a rectangle of highlighted cells, is labeled by the name of the
cell in the upper-left corner followed by the name of the lower right cell.