It is a good practice to make all Designs modular. Modular Designs work by themselves, can be re-used in any part of the tree, and/or more easily reused by others.
To be modular, a Design must receive all its inputs via Parameters, and it must not have any reference chains that reference out of the root of the modular Design. To achieve this, sometimes you must make an extra effort to push values down the tree vs. having reference chains that reference up the tree.
[Need an example of a modular Design]
In the Child Rule context, there is a special reference – Child.
[Need examples of using Child.]
This allows you to reach down to the Child from the Child group to get the value of a Rule in the Child.
Also, note that kBridge provides a fast way to get a reference chain by pointing and clicking on a node in the Model tree, on an object in the graphics, or on a row in the Rule grid.
[Need examples of pasting ref chains by clicking]
