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OK, I finally finished a version of a document I have been promising to write. We put it on our site: OOMessagingCommandPatternStatePattern. In it we present examples of the following in LabVIEW: messaging with LabVIEW objects Command Pattern (with XML configuration files application example) State Pattern Hopefully the examples will be helpful to some readers, and promote further discussion on scalable application architectures.

If I climb a mountain and view everything from such a high abstraction level, that's clear. You propably need to do software in graphical IDEs such as LabVIEW or uml to see it. But actually it boils down to software-developement basics. You have a box around something (the SubVI boundary, a loop, encapsulation in OOP, virtual folder). Formulated it the wrong (graphical) way. Encapsulation is the abstract concept, the box around is the graphical (language-specific) implementation. But it's hen and egg (the ancient greeks and geometry, that's long before we invented tubes and transistors). Second step, we do something with information/data. So let's put this data inside the box. Call it state information, variable, invariant, whatever. Put everything (data) we have in a container. Place containers inside container. Recurse or iterate that process. This way, we just get order in the chaos, information out of the entropy, the ultimate process of creation. All we still need is a way of interaction: queues, tunnels, controls, interfaces, acess scope, a door to open the box .... But: is this the nature of being? Or is this just a reflection of or mind (we live in rooms that have doors that only go to specific other rooms, no wormholes possible). Felix