25. The system of claim 22 , wherein, for each of at least one of the located program elements, the debugging comment is indented, and an extent of the indentation corresponds to the hierarchical level of the located program element as indicated by the state information.
25. The system of claim 22 , wherein, for each of at least one of the located program elements, the debugging comment is indented, and an extent of the indentation corresponds to the hierarchical level of the located program element as indicated by the state information. 26. The system of claim 25 , wherein: the program elements are arranged as a node-set; a subset of the node-set is executed; and the extent of indentation indicates a position of the debugging comment's corresponding program element within a genealogical line of the subset of the node-set.