Excel highlighting

[Ken]

Whenever I click on a cell the cell stays highlighted and
I can't release it. It acts as if you are holding the
Control key and I can't release it

 

[Don Guillett]

try the f8 key

 

[David McRitchie]

If F8 key is invoked you will see either EXT or ALT
on the status bar below the spreadsheet. More about the status bar at
http://www.mvps.org/dmcritchie/excel/formula.htm#statusbar

but if ALT or EXT does not appear then take a look at
http://www.mvps.org/dmcritchie/excel/ghosting.txt
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