Improve documentation of orphan instances (thanks to Adrian Hey)

[ghc-hetmet.git] / docs / users_guide / using.xml

diff --git a/docs/users_guide/using.xml b/docs/users_guide/using.xml
index 5d92ab2..b171ad3 100644 (file)
--- a/docs/users_guide/using.xml
+++ b/docs/users_guide/using.xml
@@ -342,6 +342,20 @@ module X where
       <varlistentry>
        <term>
           <cmdsynopsis>
+            <command>ghc --show-iface <replaceable>file</replaceable></command>
+          </cmdsynopsis>
+          <indexterm><primary><option>&ndash;&ndash;--show-iface</option></primary></indexterm>
+        </term>
+       <listitem>
+             <para>Read the interface in
+             <replaceable>file</replaceable> and dump it as text to
+             <literal>stdout</literal>. For example <literal>ghc --show-iface M.hi</literal>.</para>
+       </listitem>
+      </varlistentry>
+
+      <varlistentry>
+       <term>
+          <cmdsynopsis>
             <command>ghc --supported-languages</command>
           </cmdsynopsis>
           <indexterm><primary><option>&ndash;&ndash;supported-languages</option></primary></indexterm>