Spelling Hi Richard Great to see you helping to correct spelling mistakes However you should be aware of Wikipedia Manual of Style National varieties of English An article on a topic that has strong ties to a particular English speaking nation should use the English of that nation This includes differences in spelling between US English and other varieties of English i e US center Brit centre US organization Brit organisation etc A comprehensive list of differences can be found at American and British English spelling differences Note that Australian and New Zealand articles largely follow British English spelling too Cheers