Attached is a patch fixing a few doc omissions for MERGE.
I don't think that it's necessary to update every place that could
possibly apply to MERGE, but there are a few places where we give a
list of commands that may be used in a particular context, and I think
those should mention MERGE, if it applies.
Also, there were a couple of other places where it seemed worth giving
slightly more detail about what happens for MERGE.
Regards,
Dean
