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update leaf text nodes concept

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Ian Storm Taylor 2016-07-13 16:33:09 -07:00
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docs/concepts/the-document-model.md
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@ -17,7 +17,7 @@ Each `Document`, `Block` and `Inline` node implements a [`Node`](../reference/mo
### Leaf Text Nodes
One constraint of Slate documents is that the leaf nodes are always `Text` nodes. No `Block` or `Inline` node will ever have no children. It will always have at least an empty text node.
One constraint of Slate documents is that the leaf nodes are always `Text` nodes. No `Block` or `Inline` node will ever have no children. It will always have at least an empty text node. (However, you can _render_ text-less nodes, see the [Void Nodes](#void-nodes) section below!)
This constraint means that [`Selections`](../reference/models/selection.md) can always refer to text nodes, and many text-node-level operations are always "safe" regardless of the tree's structure.