The underlying system that Boetti devised, a kind of counting game, becomes evident as you walk among the rugs.
We need to fix the underlying system.
Workflows are used to manage the state of some object or asset in the underlying system.
The problems with the underlying system were well known within Apple.
The code considers a "system" which is the underlying system being studied.
Programs such as Hello World take control of the running environment and make calls on the underlying system to do their work.
In most cases the underlying systems were not designed for direct exposure to consumers.
In a computer experiment a computer model is used to make inferences about some underlying system.
You can follow the p-code/Java model and build a little sandbox on top of the underlying system.
The underlying system was based on a set of resources included in application software, holding text that would appear in the balloons.