Bob G answered your question, but as for Help being of no Help, this is just
a small portion of what you get with a search for: Excel keyboard shortcuts;
Indeed, the answer is in the help contents, both offline and online.
I'm wondering, though, if the person who asked the question got confused
about how to use the Help function. With Leopard and Snow Leopard,
there is a little Spotlight-like search box that appears when you
click on the Help menu text. However, this doesn't actually search
the Excel application help content. Rather, it searches the Excel
menus for a match, and then it searches the Mac OS X general help
content. Kind of strange behavior and certainly not what we'd expect
for an application-specific help function.
Anyway, this might explain why the person asking the question
was disillusioned with the Excel help content - they may not
have gone into the Excel help itself, but might have
based their judgment on what the results of that Spotlight-like
search box brought them...
???
Jeff