Adjusted to use the new module synopsis support macros.
diff --git a/Doc/lib/libthread.tex b/Doc/lib/libthread.tex
index c8d251e..2e55b41 100644
--- a/Doc/lib/libthread.tex
+++ b/Doc/lib/libthread.tex
@@ -1,6 +1,8 @@
\section{Built-in Module \module{thread}}
-\label{module-thread}
-\bimodindex{thread}
+\declaremodule{builtin}{thread}
+
+\modulesynopsis{Create multiple threads of control within one namespace.}
+
This module provides low-level primitives for working with multiple
threads (a.k.a.\ \dfn{light-weight processes} or \dfn{tasks}) --- multiple