>>Hi everybody,
>>
>>I've checked this link http://grammarist.com/spelling/cancel/ but I am not 100% sure which spelling should I choose. The software is written by US company, but may be used by US, Canadian, NZ and Australian clients. It may also be used internationally in other countries.
>>
>>So, just wondering what spelling do you prefer in your code?
>>
>>Thanks in advance.
>
>I wouldn't worry much about it. The meaning of the word is well understood by English speakers everywhere, even if there is a slight difference in spelling. Neither is incorrect.

Well, I found there were different spellings used in one form. This prompted my question. Obviously all code needs to be consistent with the usage. I asked my manager and she suggested to use 1 l. However, I am looking into another procedure now and I see that we update database with 'CANCELLED'. I am not sure if it should affect the usage for message boxes and wait windows and log files, though.