VAR_NUM_THREADS
{ YDVAR(1, VAR_NUM_THREADS) }
server_num_threads: VAR_NUM_THREADS STRING_ARG
%token VAR_SERVER VAR_VERBOSITY VAR_NUM_THREADS VAR_PORT
server_num_threads: VAR_NUM_THREADS STRING_ARG
%token VAR_SERVER VAR_VERBOSITY VAR_NUM_THREADS VAR_PORT