At Peerwith we believe in custom requests. You, the client, posts a request asking what you need. Then experts respond to that question and prepare a quote covering for the delivery of that what you require.
So in essence: included is anything that you put in your request!
There is however also a so called "Standard Manuscript Review" request. Read here what it includes. It describes exactly what you will receive if you post a request for a standard Manuscript review request.
So for example full manuscript preparation including extensive editing. This is NOT INCLUDED in a standard review. After all, the review is supposed to advice you to what extend such service is needed. However, if you explicitly ask for it in the instructions, you can expect for the expert to include it in the quote and service provided.