doc/globals.rdoc: Document what setting $DEBUG does.
doc/globals.rdoc: Added pointer to $-d for full documentation.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39365 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
doc/globals.rdoc: Document what setting $DEBUG does.
doc/globals.rdoc: Added pointer to $-d for full documentation.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39365 b2dd03c8-39d4-4d8f-98ff-823fe69b080e