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--- at:tutorial:reflection [2007/07/23 15:51] – elisag
+++ at:tutorial:reflection [2007/07/23 15:52] – elisag
@@ Line 54: / Line 54: @@
 </code>
-<note> Add a word on **base** </note>
+<note> **TODO** Add a word on **base** </note>
 This mirror overrides the default implementation of the meta-operation ''doesNotUnderstand'' to report that a slot was selected which did not exist. The user is then provided with an opportunity to provide the missing definition or pass this opportunity in which case the default behaviour is executed (i.e. an error is being reported). The mirror defined above can be used subsequently to create objects with an adapted meta-object protocol. Such objects are called **mirages** as they are not ordinary objects, but rather objects whose appearance and behaviour are defined by a custom mirror. Mirages are constructed using a variation on the ''object:'' constructor as is illustrated below.