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documentation/Features/callbacks.md

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+# Callbacks
+
+Every collection can have an optional callback node. In this node there are five functions:
+
+| | |
+|-|-|
+| `create` | Is called when an element was successfully added to the collection      |
+| `read`   | Is called when the collection was successfully queried about an element |
+| `update` | Is called when an element in the collection was successfully updated    |
+| `delete` | Is called when an element was successfully removed from the collection  |
+| `resize` | Is called when the collection was full and successfully resized         |
+
+Check the documentation for each collection to see which functions call which callbacks.