To "squash" a dataset into a dataset with LRECL=80, RECFM=FB, BLKSIZE=2120 
use the TSO TRANSMIT (a.k.a. XMIT) command with the OUTDSN keyword.

Instead of actually transmitting the file somewhere else, it will put the 
output into the dataset named in the OUTDSN keyword with those attributes.

To restore the file to it's original format, use the RECEIVE command with 
INDSN.   You name the "squashed" dataset in the INDSN and receive it from 
there as you would a normal RECEIVE.  The DCB attributes will  be taken 
from the INDSN, but you may need to specify SPACE for the received dataset 
if the defaults aren't enough. 

--Roger 




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