new issue: use the wording "immediately enclose" consistently in chapter 12

For the purpose of specifying the semantics of <compensate> and <compensateScope>, a scope, A is considered to immediately enclose another scope, B, if B is enclosed in A and B is not enclosed in any other scope or FCT-handler that is itself enclosed in the outer scope A.  Other structured activities (e.g. <sequence> or <forEach>) and event handlers enclosed in A do not affect the concept of immediate enclosure.