Problem with default FS SUPERIOR

[David Eppstein <Kronj@SU-SIERRA.ARPA>]

Problem:
	It is impossible to use FS SUPERIOR to read a file name from JCL.
	If the JCL has a CRLF at the end, that gets put into the filename.
	If there is no CRLF, EMACS bombs out with an illegal instruction.

Cure:	Add a J :L .,ZK before the first J :S,$ in & Default FS SUPERIOR.
	Then use JCL as usual with a CRLF (or not if you can convince
	EMACS not to die)...
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