I would like to clean up entrees in my
org-agenda files. I have had many duplicate lines which I have removed using
delete-duplicate-lines. However, I also have many similar lines which I would also like to delete, which are not identical. For example, in the two entries below:
John Doe is %d years old today (Birthday) <1968-08-21> John Doe (Birthday) <1968-08-21>
I would like to find these similar lines and then keep the 1st entry but delete the second. I would obviously like to check each entry and select which line must be removed.