I was about to embark on moving some VLOOKUP type code into a VBA module
using the "WorksheetFunction" approach.  First however, I thought I'd check
whether there was an easier, more direct approach.

Following my nose, I find the VBA development help system provides a list of
available native VBA functions which include LOOKUP so I don't have to mess
with the "worksheetfunction" approach.  Wonderful.

I follow the VBA help system for syntax and plug it into a VBA module.  VBA
provides a compile error though "Sub or Function not defined".

What's going on?  The VBA help system helpfully describes the function but
the compiler does not recognize it.  Do I need to link to something?  I've
never stumbled across such a thing in VBA before.

Thanks.

Bill