Manuals come with virtually any appliance, and they typically target the end-user. Among other things (legal specifications, part numbers…), these documents contain specific instructions on what to do and what not to do with the appliance.
Should these documents directly address the user (imperative form) or should they be written in passive voice?
Do not place living animals inside the microwave under any circumstances.
Under no circumstances are living animals to be placed inside the microwave.
What are the different effects of either style?