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							- Smalltalk current createPackage: 'Helios-Exceptions'!
 
- Error subclass: #HLError
 
- 	instanceVariableNames: ''
 
- 	package: 'Helios-Exceptions'!
 
- !HLError commentStamp!
 
- I am the abstract superclass of all Helios-specific errors.!
 
- HLError subclass: #HLChangeForbidden
 
- 	instanceVariableNames: ''
 
- 	package: 'Helios-Exceptions'!
 
- !HLChangeForbidden commentStamp!
 
- I get signaled when a (often user) requested change is forbidden. A confirmation message can then be displayed to the user.
 
- See `HLModel >> withChangesDo:`.!
 
- HLError subclass: #HLListItemNotFound
 
- 	instanceVariableNames: ''
 
- 	package: 'Helios-Exceptions'!
 
- !HLListItemNotFound commentStamp!
 
- I get signaled by a `HLListWidget` when a non-existing item in the list is activated.!
 
 
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