STORE! file format?

[Yong Ren]

	I got some files from the STORE!, but have problem handling them.
	Every file has a name like *****+IN.Z, the uncompressing goes ok,
	but then ...

	What is +IN format? On my Unix PC, it says cpio archive, but I 
	really don't believe it. It is not tar, ar, ... either.

	Anyone knows? Please give me your help!!

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