[R] How to make a break on y-axis of a histogram chart using R?

[HongSheng Liao]

Attached is a histogram chart with a break on y-axis which my friend made
for me using phot shop.  Do anyone know how to make such a break using R?
Thanks in advance.

(See attached file: 2007 age distribution.doc)
Hongsheng (Hank) Liao, Ph.D.
Lab Manager
Center for Quantitative Fisheries Ecology
800 West 46th Street
Old Dominion University
Norfolk, Virginia 23508
Phone:757.683.4571
Fax:757.683.5293