What is the difference between -HeapDumpOnOutOfMemoryError and +HeapDumpOnOutOfMemoryError options?

What is the difference between -HeapDumpOnOutOfMemoryError and
+HeapDumpOnOutOfMemoryError options?

References

Reference NO 1

http://www.ibm.com/developerworks/websphere/library/techarticles/0706_sun/0706_sun.html

Reference NO 2

http://blog.gmane.org/gmane.text.xml.xalan.java.user/page=18

Reference NO 3

#EANF#

Reference NO 4

#EANF#

Reference NO 5

#EANF#

Reference NO 6

#EANF#

Reference NO 7

#EANF#

Reference NO 8

#EANF#