COPY and triggers

I've been reading Great Bridge's document on Administration and Tuning
(PDF document under http://www.greatbridge.com/product/software.php)
and came across this statement on page 27:

"When using the COPY command to load data into a Great Bridge PostgreSQL
database, the triggers and constraints on tables are disabled."

This is contrary to what the man page on COPY says and to my experience.
Is this statement wrong? or is there some method of disabling
triggers and constraints that I have overlooked?

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
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