only need (say) 14-bits of precision.</li>
<li>llvm-gcc now supports a C language extension known as "<a
-href="http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-August/002670.html">Blocks
-</a>". This feature is similar to nested functions and closures, but does not
+href="http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-August/002670.html">Blocks</a>".
+This feature is similar to nested functions and closures, but does not
require stack trampolines (with most ABIs) and supports returning closures
from functions that define them. Note that actually <em>using</em> Blocks
requires a small runtime that is not included with llvm-gcc.</li>