I have a worksheet downloaded from somewhere else. Its columns' width (9.5)
are wider than my default column (8.38), but on the screen it shows more
column than my default worksheet, although both are set at 100% viewing.

Furthermore, no matter what column width I put in , the screen appearenace
of this worksheet would not change.

Why is it so? How can I change it. (Note: the worksheet is not protected).

Thanks.