General Form:

PWL(T1 V1 <T2 V2 T3 V3 T4 V4 ...>) <r=value> <td=value>

Examples:

VCLOCK 7 5 PWL(0 -7 10NS -7 11NS -3 17NS -3 18NS -7 50NS -7)
+ r=0 td=15NS

Each pair of values ((T_{i}), (V_{i})) specifies that the value of the source is (V_{i}) (in Volts or Amps) at time = (T_{i}). The value of the source at intermediate values of time is determined by using linear interpolation on the input values. The parameter r determines a repeat time point. If r is not given, the whole sequence of values ((T_{i}), (V_{i})) is issued once, then the output stays at its final value. If r = 0, the whole sequence from time 0 to time Tn is repeated forever. If r = 10ns, the sequence between 10ns and 50ns is repeated forever. the r value has to be one of the time points T1 to Tn of the PWL sequence. If td is given, the whole PWL sequence is delayed by the value of td. Please note that for now r and td are available only with the voltage source, not with the current source.