The new PMBOK Guide has a simplified structure for Control Scope. In the 3rd Edition, the equivalent process, Scope Control, had 7 inputs, 4 tools and techniques, and 8 outputs. The 4th Edition has 5 inputs, only 1 tool and technique (Variance Analysis) and only 5 outputs. That's 11 total, down from 19 in the 3rd Edition.
They go like this:
Inputs: Project Management Plan, Work Performance Information, Requirements Documentation, Requirements Traceability Matrix, and Organizational Process Assets.
Tool and Technique: Variance Analysis
Outputs: Work Performance Measurements, Organziational Process Assets Updates, Change Requests, Project Management Plan Updates, and Project Document Updates.
This is the formal structure around "Control Scope", otherwise known as managing scope creep.
And that's important. But is there more to the story? Funny you should ask. There sure is.