Just a note.. the first step illustrated at [link to ecsys.org] is done so to make it easy to understand.

Now that we are at a slightly more advanced level we can do away with making obvious representations and try to let our sub-conscious mind take over when creating them.

(The obvious representations can still work, but not as well as one that is more random and unique.)

I don't mean to confuse, but some of the material will change as we move along to more advanced uses (however the website will not). The old information is sometimes necessary to create familiar stepping-stones.