[x] get rid of unnecessary prepositional phrases -- author clearing throat (It can be shown that)
[x] get rid of extraneous adverbs (very, really, quite, basically, generally)
[x] get rid of there are / there is
[x] turn negatives to positives (she was not often right -> she was usually wrong)
[x] get rid of extraneous prepositions (the meeting happened on monday -> the meeting happened monday) (they agreed that it was true -> they agreed it was true)
These are mostly edits that do the following minor grammatical things (suggested by this MOOC I'm taking http://online.stanford.edu/course/writing-sciences-self-paced-spring-2016)