Sorry, I found my problem. I inadvertently made the text color the same as
the background color of that cell.

"Bill43" wrote:

I have been working on a large spreadsheet over many months with no
problems. all of a sudden I have entered data in a cell, but it is like it
is invisible. The data is there and performs a function as it is suppose to
do, and if that cell is highlighted, the info appears in the function line,
however, it will not appear in the cell. Thank you