Siblings Versus Children
In the System Tree Items table, you create hierarchical levels by inserting items as either siblings to or children of the selected item. Siblings are items that reside at the same level, and children are items that reside at the next lower level. Although you can insert only children when the top-most assembly is selected, when an assembly at a lower level is selected, you can insert both siblings and children. The children and siblings that you insert form branches of the tree.
To represent your system, the system tree can have as many as 64 levels.
• In the case of hardware, the system tree generally represents assemblies and parts in the system.
• In the case of software, the system tree might represent the various modules and submodules in the software application.
• In the case of processes, the system tree might represent the various phases in the overall process.
Regardless of whether you are modeling hardware, software, or processes, an item in the system tree is considered to be either an assembly or a part, depending on whether it can be further broken down. For more information, see Assembly Versus Part.
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All filters applied to the System Tree Items table affect the items shown. For example, when a part is inserted in this table, it is visible only if it meets current filter criteria. For more information, see Filters.
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