title: What does * mean in XAML
body: <p>What does * mean in XAML. I have a grid of width 400. And divided the grid to 3 columns.
  What does *.4 mean? I thought it is 40% of the space available. so thought the first 2 columns will get 40% percent each and the rest is taken by the third column.
  but looks like, the third column is taking 60% and the first two are getting 20% each. 
  How does this work?</p>
  
  <pre><code>&lt;Grid&gt;
      &lt;Grid.ColumnDefinitions&gt;
          &lt;ColumnDefinition Width=".4*"/&gt;
          &lt;ColumnDefinition Width=".4*"/&gt;
          &lt;ColumnDefinition /&gt;
      &lt;/Grid.ColumnDefinitions&gt;
  &lt;/Grid&gt;
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/6TwyS.png" alt="enter image description here"></p>