Document GADTSyntax extension

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

diff --git a/docs/users_guide/flags.xml b/docs/users_guide/flags.xml
index c8e5dfc..a9c0184 100644 (file)
--- a/docs/users_guide/flags.xml
+++ b/docs/users_guide/flags.xml
@@ -763,6 +763,13 @@
              <entry><option>-XNoGADTs</option></entry>
            </row>
            <row>
+             <entry><option>-XGADTSyntax</option></entry>
+             <entry>Enable <link linkend="gadt-style">generalised algebraic data type syntax</link>.
+             </entry>
+             <entry>dynamic</entry>
+             <entry><option>-XNoGADTSyntax</option></entry>
+           </row>
+           <row>
              <entry><option>-XTypeFamilies</option></entry>
              <entry>Enable <link linkend="type-families">type families</link>.</entry>
              <entry>dynamic</entry>
@@ -990,8 +997,9 @@
            </row>
            <row>
              <entry><option>-XFlexibleInstances</option></entry>
-             <entry>Enable <link linkend="instance-rules">flexible instances</link>.</entry>
-             <entry>dynamic</entry>
+              <entry>Enable <link linkend="instance-rules">flexible instances</link>.
+              Implies <option>-XTypeSynonymInstances</option> </entry>
+              <entry>dynamic</entry>
              <entry><option>-XNoFlexibleInstances</option></entry>
            </row>
            <row>