pgadmin III - database backup / restore

I'm investigating the use of Postgres for a future project & have installed
beta 8.0 using the windows installer which includes pgadmin III. Everything
works great, I can create tables etc. Connect from external applications...
but, no matter what I do the Backup and Restore options on the pgadmin
Tools menu remain disabled (irrespective of selected node in the tree). I
can't find any mention of this feature in the online help or on mailing
lists etc.

Can anyone enlighten me ??

Paul



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