Language. I like to include a section explaining the basic concepts of Plain English and that it is the preferred style of language. I include my own pet hates in tech writing: nominalisation (turning a verb into a noun eg "In order to perform the deletion of the redundant shifts...") Yes, there's something pathetic (but aspirational) about over using the nominalised verb. A need to sound 'proper'. Actually, I think the routine bagging of the passive voice is far less heinous than this treatment of the verb. In some cases, indeed, using the passive voice can add authority. And, because the object comes at the start of the sentence, it gains prominence - this can sometimes be desirable.