Merged cells have problems with autofitting the rowheight.

And cells with lots of text can have trouble displaying all of it. If you add a
bunch of alt-enters to force new lines within the cell, you can usually see lots
more.

But make sure you manually adjust the rowheight when you're done.

Excel problem wrote:

I merged a section of cells and set the wrap text and the text to start at
top. For some reason when you click out of the cell it will not show all the
text you typed. Does any body know why.

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Dave Peterson