I have a question about the following GHCi interaction:<br><br><div style="margin-left: 40px; font-family: courier new,monospace;">Prelude&gt; let x = 23<br>Prelude&gt; :show bindings<br>x :: Integer = _<br></div><br>What is the meaning of the underscore in the third line?  Why doesn&#39;t it say this, instead?<br>
<br><div style="margin-left: 40px;"><span style="font-family: courier new,monospace;">x :: Integer = 23</span><br></div>
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