I have restored the post and locked it from future edits. @Smithy
Self-vandalism – especially after forum members have contributed public answers to a public question – is against forum policy. People answer for the good of all, and self-vandalism makes those answers impossible to understand. Self-vandalism also supports cheating on classwork, and this forum does not support cheating – advice should be incorporated into student work in a way that does not need to be a secret. If you want to remove a post with no substantial answers – or if you have a concern about privacy – please flag your post for help from a moderator.