## 2.25MARK command

mark

### 2.25.2  Purpose

Remember circuit voltages and currents.

After the mark command, the transient and fourier analysis will continue from the values that were kept by the mark command, instead of progressing every time.

This allows reruns from the same starting point, which may be at any time, not necessarily 0.

### 2.25.4  Examples

transient 0 1 .01
A transient analysis starting at zero, running until 1 second, with step size .01 seconds. After this run, the clock is at 1 second.

mark
Remember the time, voltages, currents, etc.

transient
Another transient analysis. It continues from 1 second, to 2 seconds. (It spans 1 second, as before.) This command was not affected by the mark command.

transient
This will do exactly the same as the last one. From 1 second to 2 seconds. If it were not for mark, it would have started from 2 seconds.

transient 1.5 .001
Try again with smaller steps. Again, it starts at 1 second.

unmark
Release the effect of mark.

transient
Exactly the same as the last time, as if we didn't unmark. (1 to 1.5 seconds.)

transient
This one continues from where the last one left off: at 1.5 seconds. From now on, time will move forward.