Load Rx with a list of files (delimited by a CR (ascii 13)) that match path/filespec. The Path parameter is the directory and file name mask, including wildcard characters; i.e. "C:\test\*.*". If no path is given the current directory is searched. Returns an empty string if no files found.
Rx: A string register.
Ry | "[path/]filespec": A string register or constant that represents a filespec.