Every component has a string that defines its type. For primitive components, the type typically matches the default name of the component. For example, a rectangle is of type Rectangle. You can see the type string in the component property sheet on the General tab.
Objective Views allows you to assign a custom type to a symbol. Consider the following scenario:
You create a symbol that looks like a Stingray.
You assign it a type of Stingray.
Now, whenever an end-user views properties for the symbol, the type is Stingray.
You can set the type for a symbol in Symbol Designer. To open the Symbol Type dialog, either select Symbol Type from the Edit menu or click the Symbol Type button 
on the toolbar.
After you assign a name to the type, Symbol Designer saves the type to the symbol the next time you save it.
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