27. The system of claim 22 , wherein: the program elements include a program path and a program variable; the program path is located by an identification of a path tag; and the program variable is located by an identification of a variable tag.
27. The system of claim 22 , wherein: the program elements include a program path and a program variable; the program path is located by an identification of a path tag; and the program variable is located by an identification of a variable tag. 28. The system of claim 27 , wherein the program path is one of a template, a for-each branch, a when-branch, and an if-branch.