LineBreak inside a TextBlock
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="Microsoft.Samples.Graphics.RectangleExample" WindowTitle="Example"> <Canvas> <TextBlock Grid.Row="2" Margin="3"> Proportional Tiles<LineBreak></LineBreak>(no stretch) </TextBlock> </Canvas> </Page>