What Précis Means
A précis is the essence of a longer story of any kind. You take your story and ‘boil it down’, so as to get rid of all the parts that do not really matter; you then collect what is left, and put these points together in a short concise ‘summary’. But the result must not be a ‘list’ of important points, or a series of ‘jottings’. It must be the same story told clearly and readably, in a very much condensed form.
For instance, you may have to make a précis of a long pile of letters dealing with some particular subject; or perhaps the account of a trial; or a long report written by one individual. It doesn’t matter what the longer ‘story’ is. What you have to do is to read it through, extract all the parts that matter, and put them down in readable form.