Problem with spool.

Hi

My problem is regarding "saving" spool in some "place" and than decide if
print it realy or not. I'll try to describe it more precisly.

When I calling report program do following functions:
1) Write header record (say 5 lines)
2) Detail calculations
3) Write detail record (say 2 lines)
4) Total calculations
5) Write total record (say 3 lines)

And problem is that only during 4-th point - total calculations I got all
data based on them I can decide if record/point 1/3/5  shold be or shouldn't
be realy write to finally spool/printout.

The easiest way is reorgenize processing:
2) Detail calculations
4) Total calculations
6) check condition and 
1) Write header record (say 5 lines)
3) Write detail record (say 2 lines)
5) Write total record (say 3 lines)
 
But this way not always is possible to do. 

So my question is how to write record into some temporary "space" - all
three records and than move them back to finally spool in order:
1) Write header record (say 5 lines) (into temporary space, complete 5
lines)
2) Detail calculations
3) Write detail record (say 2 lines) (into temporary space, complete 2
lines)
4) Total calculations
5) Write total record (say 3 lines) (into temporary space, complete 3 lines)
6) check condition and 
7) Write header record/move from temporary space into finally spool
8) Write detail record/move from temporary space into finally spool
9) Write total record/move from temporary space into finally spool

Regards.

Tomasz Skorza