> Of course if there are typos it's fine for them to be corrected. Changing grammer is more dangerous, as it can unintentionally change the meaning.
Freudian slip?
It depends entirely on the article, the more technical they are, generally the less work they need, but not always. I would be great if I could just choose what to put in each issue and send it to the designer!
Even experienced writers can do things like slip between tenses or perspective, repeat sections or order things in a way that confuses a reader unfamiliar with the subject. My main aim when editing is to do it in a way that the author will consider it faithful to the original, even if there have been a lot of changes.
On benefit I had coming to this job was a lot of experience editing reports and material produced by people from a wide range of backgrounds, but often young graduates who knew their subject well, but had no experience of writing either formal reports or informal news articles.
I've just written for an unrelated magazine, there were some interesting 'rules' I had to follow (e.g. use 'we' not 'I' as I was 'writing on behalf of the magazine', and produce several sections each with a specific word-count.
The hardest thing for me is editing my own work – when I get the proofs back there are always far more changes to be made to my bad spelling and poor grammar than anyone else's.
Neil