org-verbatim-re

org-verbatim-re is a variable defined in `org.el'.
Its value is

"\\([ 	('\"{]\\|^\\)\\(\\([=~]\\)\\([^ 	
\n,\"']\\|[^ 	
\n,\"'].*?\\(?:\n.*?\\)\\{0,1\\}[^ 	
\n,\"']\\)\\3\\)\\([- 	.,:!?;'\")}\\]\\|$\\)"

Documentation:
Regular expression for matching verbatim text.