Thanks macropod,Graham Mayor, and TonyK for your replies.
NB. TonyK, I couldn't drag it off the Tools menu.
I was trying to find out how to include a logo on a envelope using Letters
and Mailings/Envelopes and Labels.
I succeeded in getting Mail Merge on the Tools menu, but when I clicked on
it, and the Create option came up it looked too complicated for me so I
decided not to try it.
Incidently, beside Mail Merge being on the Tools menu, it is also in
Letters and Mailings.
The Create option can only bring up 'Create' if it is selected from the
Tools menu option .
Selecting it from 'Letters and Mailings' does nothing.
I will leave Mail Merge in the Tools menu but just ignore it.