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18.3.2 Sheet Genealogy Classes

Different "mix-in" classes are provided that implement the relationship protocol.

sheet-parent-mixin

Summary: This class is mixed into sheet classes that have a parent.

sheet-leaf-mixin

Summary: This class is mixed into sheet classes that will never have children.

sheet-single-child-mixin

Summary: This class is mixed into sheet classes that have at most a single child.

sheet-multiple-child-mixin

Summary: This class is mixed into sheet classes that may have zero or more children.


Common Lisp Interface Manager 2.0 User's Guide - 27 Feb 2008

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