what is a CFTOKEN? and cf id?

To use client and session variables, ColdFusion must be able to identify the client. It normally does so by setting the
following two cookie values on the client’s system:

• CFID: A sequential client identifier
• CFToken: A random-number client security token

These cookies uniquely identify the client to ColdFusion, which also maintains copies of the variables as part of the
Session and Client scopes. You can configure your application so that it does not use client cookies, but in this case,
you must pass these variables to all the pages that your application calls