For RECFM=V(B)(S), what happens if the physical length of a block
exceeds the length in the BDW?

o Bytes in the physical block beyond the length in the BDW are ignored?
  (A writer on another list tells me I can rely on this.)

o The access method reports an error?

I prefer to follow the rules.

Suppose the programmer reads blocks with BSAM and performs strict
error checking?  Suppose the programmer reads a VBS file on a non-z
system and performs strict error checking?

(SMP/E copies IEBCOPY relative files to UNIX files and relies on the
BDWs to reconstitute the VBS data set.)

-- gil

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