English language selection

[johnEthicalTechnology]

I've got a question about words that are spelt differently in different usages of the English language. I'm testing the spell checker package on a computer which is set to the Australian version of the English language but when it's being used it'll have to be the American version. Is there any way to set that?

Also, this package will be used in an AWS Lambda function; is there anyway to determine which type of spell checking will be used in that? Or it doesn't matter and I should just set this using the environmental variables? Will this also change what language version is used?

Cheers!