I have been faced with this problem many times so I wrote a filter program in quick basic. I keep the shell on file and modify the code to suit the job. The files usually only have about ten lines of qbasic and work from the command line.
Usually I have needed to convert a data base of celestial objects from one form to another. The programs read the files do the calcs and output the file in the new form. When you have 100 or so entries to change it cuts the edit time down to a couple of minutes.
Barry
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