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1.1 ! root 1: #print ! 2: Sometimes it is desirable to add text before a ! 3: known line, rather than after it. For this purpose ! 4: there is an 'i' (insert) command that places the new ! 5: material before the specified line. Otherwise, 'i' ! 6: is exactly like 'a', so that ! 7: 3i ! 8: is the same as ! 9: 2a ! 10: Remember the address of the last line? Just ! 11: before the last line of file 'airlines' ! 12: insert the line ! 13: ! 14: twa ! 15: ! 16: and then rewrite the file with wq and type ready. ! 17: #create Ref ! 18: american ! 19: braniff ! 20: continental ! 21: delta ! 22: eastern ! 23: national ! 24: pan am ! 25: twa ! 26: united ! 27: #create airlines ! 28: american ! 29: braniff ! 30: continental ! 31: delta ! 32: eastern ! 33: national ! 34: pan am ! 35: united ! 36: #user ! 37: #cmp airlines Ref ! 38: #log ! 39: #next ! 40: 19.1a 10
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