Arguments (parameters) passed to a UDF are usually passed sequentially – unnamed and positional in a comma delimited list (like the way built in functions are called). UDF arguments may also be passed in a comma delimited list of name=value pairs, allowing for arguments to be passed in any order and with multiple optional arguments. However, if any arguments are passed in the name=value format then all arguments must be passed in that format. (Applies to: ColdFusion MX)

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