Manage client expectations with a project scope document

http://articles.techrepublic.com.com/5100-10878_11-1044366.html

What does a scope document achieve?The essence of the scope document is always to state to your client, “This is what I heard you say, this is what I plan to do, and this is the cost of the effort.” Making this statement:
· Forces you to think through the elements of the project or request.
· Gives the client your interpretation.
· Verifies the project’s who, what, when, where, and how.
· Forces the client to validate your interpretation of the planned work.