library(USERLIB) {
delay_model : table_lookup;
revision : 1.1;
date : "2004-10-21 02:36:28Z";
time_unit : "1ns";
voltage_unit : "1V";
current_unit : "1mA";
leakage_power_unit : "1mW";
nom_process : 1;
nom_temperature : 125.000;
nom_voltage : 1.620;
capacitive_load_unit (1,pf);
pulling_resistance_unit : "1kohm";
/* additional header data */
default_cell_leakage_power : 0;
default_fanout_load : 1;
default_inout_pin_cap : 0.005;
default_input_pin_cap : 0.005;
default_output_pin_cap : 0.0;
default_max_transition : 4.000;
......................