Chapter III: HIERARCHY

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Facets

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As the introductory examples showed, hierarchy is well supported in Electric. A collection of nodes and arcs is called a facet, and instances of facets can be placed in other facets. Facets are organized into cells such that each facet is a view and a version of a cell. Therefore, the facet's name is the cell name, but it may have additional information that refers to views and version numbers.

The full format of a facet's name is:

CELLNAME;VERSION{VIEW}

where CELLNAME is the name of the cell to which this facet belongs, VIEW is the abbreviated name of this facet's view, and VERSION is the version number of this facet.

For example, there may be facets called "hardy", "hardy;1", and "hardy{ic}", all of which are facets of the cell called "hardy". The facets "hardy" and "hardy;1" have no view name and are therefore from the "unknown" view of the cell. The facet "hardy{ic}" is the icon view of the cell. When no version number is displayed, it implies that this facet is the most recent version (has the largest number). Thus, the facet "hardy" is more recent than "hardy;1" and it must have a higher version number (probably 2).


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