output_buffer
Use this CHAR(254) parameter to specify the output buffer containing the result string.
format
Use this CHAR(254) parameter to specify how to format the result string, using placeholders (%s) for each parm argument. There can be up to fifty placeholders in the format argument, and there should be the same number of placeholders as parm arguments.
parm
These are the input strings that are used in the result string. You can specify up to 50 of these CHAR(254) arguments.