what is lrec=f,what is difference between f,fb,v,vb?what is
default value?how do we came to know that records are in
f,fb,v,vb?

Answer Posted / giri reddy

F-fixed unblocked,fb-fixed blocked
v-variable unblocked,vb-variable blocked

default value is u-undefined

we can see the description of data set.

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