" Default: %d\n"
"-S, --fvslop=NUM Future value expiration sloppiness.\n"
" Default: %u\n"
-"-y, --yield Enable CHESS-like yield-based fairness support.\n"
+"-y, --yield Enable CHESS-like yield-based fairness support\n"
+" (requires thrd_yield() in test program).\n"
" Default: %s\n"
"-Y, --yieldblock Prohibit an execution from running a yield.\n"
" Default: %s\n"