Douglas A. Tutty wrote: > IIRC, each [FORTRAN punch] card had a sequence number. Paul Scott writes: > That a choice which got in the way of the development stage. Who wanted > to punch a whole new deck for each small change? IIRC the numbers did not have to be sequential. That is, you could use 10 20 30 ... and then replace 20 with 15, 20, and 25 when you made a change. The card sorter just put the cards in ascending order. -- John Hasler