* Documentation fixes.

doc/manual/installation.xml

@@ -67,7 +67,7 @@ these packages.  Alternatively, if you already have them installed,
 you can use <command>configure</command>'s <option>--with-bdb</option>
 and <option>--with-aterm</option> options to point to their respective
 locations.  Note that Berkeley DB <emphasis>must</emphasis> be version
-4.3; other versions may not have compatible database formats.</para>
+4.4; other versions may not have compatible database formats.</para>
 
 </sect1>
 

src/nix-env/help.txt

@@ -30,8 +30,8 @@ Install / upgrade / uninstall flags:
 
 Upgrade flags:
 
-  --lt: upgrade unless the current version is older (default)
-  --leq: upgrade unless the current version is older or current
+  --lt: upgrade if the current version is older (default)
+  --leq: upgrade if the current version is older or current
   --always: upgrade regardless of current version
 
 Query types: