DIMARC is a feature of LT2006 and higher:
http://s-www.autodeskpress.com/resources/olcs/acad2006/oct05/topic.aspx
Search around here for a macro for lower versions of LT that kind-of-worked
for many of us before that, if upgrading is not an option.
For any Pro-Users reading this, check our the tip on that page for
AiDimFlipArrow.
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Dean Saadallah
http://LTisACAD.blogspot.com
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