Hi guys I have a question about XMLWriter. I have cards and group of cards. Each class know how to serialize itself. For card I have xmlOn: (one of my methods) that describes the card attributes Card>>xmlOn: aWriter "write a description of the receiver properties as xml uing aWriter, an instance of XMLWriter" aWriter tag name: #card; with: [self xmlInstVarOn: aWriter] Group>>xmlOn: aWriter "write a description of the receiver properties as xml uing aWriter, an instance of XMLWriter" | cardWriter | cardWriter := XMLWriter new. cards do: [:each | each xmlOn: cardWriter]. aWriter tag name: #group; with: [ aWriter tag: #groupName with: self groupName. aWriter tag: #cards with: [ aWriter raw: cardWriter contents]] And I'm not really happy. Because I would like to avoid to use raw: and instantiate a new writer. I would like to know how I could use the write to pass the results of the iteration over cards I wanted to write something like aWriter tag name: #group; with: [ aWriter tag: #groupName with: self groupName. aWriter tag: #cards with: [self cards do: [:each | each xmlOn: aWriter]]