Procedure: 1. ctrl-o open source file 2. ctrl-h open replace dialog, in 'Replace' page, 1)set 'Replace Unit' to 'Line' 2)set 'Unit number filter' to: 3)set 'Search for pattern': 4)fill nothing in 'Replace with pattern', means remove 3. Click 'Replace', that's ok! Note: 9<2> means 9,11,13,15...(start by 9, step is 2) other examples: * all odd numbers -- 1<2> * 2,5,8,11,14,17,20 -- 2<3>20 |