-<p>At a future point in this tutorial ("mutable variables"), we'll talk about #1
+<p>In <a href="LangImpl7.html">Chapter 7</a> of this tutorial ("mutable
+variables"), we'll talk about #1
in depth. For now, just believe me that you don't need SSA construction to
handle them. For #2, you have the choice of using the techniques that we will
describe for #1, or you can insert Phi nodes directly if convenient. In this
in depth. For now, just believe me that you don't need SSA construction to
handle them. For #2, you have the choice of using the techniques that we will
describe for #1, or you can insert Phi nodes directly if convenient. In this