LISTFIND("filename"<,field1,field2,...>)
LISTFIND("filename1,filename2,..."<,field1,field2,...>)
LISTFIND(variable_array <,field1,field2,...>)
LISTFIND() searches for literals contained in the specified list file(s), or a specified variable array, within the specified field list.
Note: When specifying multiple list files, there should be no spaces before or after the comma separators.
If the optional field list is omitted, then LISTFIND() searches for literals contained in the specified list file within the entire record using the appropriate character set for the record based on the field definitions.