ERR_NOTFOUND
stderror(ERR_NAME | ERR_NOTFOUND, "then/endif");
stderror(ERR_NAME | ERR_NOTFOUND, "endif");
stderror(ERR_NAME | ERR_NOTFOUND, "endsw");
stderror(ERR_NAME | ERR_NOTFOUND, "end");
stderror(ERR_NAME | ERR_NOTFOUND, "label");