Now look at our annotated version. The comments are more precise than I
would write or think in actual fact. The extra detail is to make them
clearer for another reader. Highlighting can also be useful, provided
it is not over done, so I've indicated the main points I might
emphasise in this way. These are the conditions that have been used to
find the quadratic Taylor polynomial and that this extract considers
approximations about zero only. This should help to remind me of the
main points if I need to skim back over this section later.
The annotations are just to give you an idea of what you might be thinking or scribbling as you read. Don't worry if your thoughts were different. Some people use pictures more than others, for example.
On the next page we have another short extract so that you can have a go at annotating.