I have two workbooks with three sheets in both. Each sheet is protected. In
one workbook, the second and third sheet do not allow any navigational
keys--such as ENTER or Down arrow--to work vertically. The TAB will move
horizontally from cell to cell but will not go to next line. In the second
workbook, all navigational keys work fine when sheets are protected. The
workbooks were created at same time in same manner on same computer with same
settings. What is wrong?