abs

In the first example, you can retrieve specific indices from a list using zl lookup.

The second example lets you input two values to be set as a maximum and minimum value of a range, and output a series of integers in that range. 

This example demonstrates a way to detect if two events, coming from two different sources, occur within a given interval of time from each other. We use the cpuclock object to detect the time at the moment each event occurs. The output of either cpuclock object in this example will trigger a subtraction calculation between the timings of the most recent event from each source.