On Thu, 27 May 2004 12:02:09 +1200, something compelled Navigator
, to say:

Cunningham: Remove all horizontal wrinkles, in the heavier puffs pull
very hard to bend the mast which will flatten the sail and twist open
the top batten

I thought the purpose of a cunningham was to tension the luff
past what is possible with just the halyard. Sounds like
something you'd do in high wind.