| Scenario |
| appointments |
| * |
|
|
|
| Calendar |
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| add(Appointment):void |
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|
|
|
|
|
|
| Appointment |
|||||
| date:Date |
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| start:Time |
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| end:Time |
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| desc:String |
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| Regular |
| Todo |
| AllDay |
| Encapsulate
Type Code to Subclasses |