Delimiters and special characters in flat file messages

The DSR, CDM, RDR-R state that "to communicate Delimiters in a Cell [...] the Delimiters shall be immediately preceded by a backslash character (Unicode U+005C). Therefore the string A|B would have to be communicated as A\|B.":

Assume that a creation has three contributors: Paul Simon, Art Garfunkel and 24|7. This will need to be communicated as

Paul Simon|Art Garfunkel|24\\|7

Note that there are no quotes used to enclose either the complete string or its three components. If one adds a fourth contributor called “Mad Dog” Dolly, one would have  

Paul Simon|Art Garfunkel|24\\|7|"Mad Dog" Dolly

Assume that a creation has three contributors: Paul Simon, Art Garfunkel and 24\7. This will need to be communicated as

Paul Simon|Art Garfunkel|24\\\\7