struct ccase *casewindow_get_case (const struct casewindow *,
casenumber case_idx);
const struct caseproto *casewindow_get_proto (const struct casewindow *);
struct ccase *casewindow_get_case (const struct casewindow *,
casenumber case_idx);
const struct caseproto *casewindow_get_proto (const struct casewindow *);