diff --git a/Contrib/InstallOptions/Install Options.html b/Contrib/InstallOptions/Install Options.html
index 368ff0bb..d766681b 100644
--- a/Contrib/InstallOptions/Install Options.html	
+++ b/Contrib/InstallOptions/Install Options.html	
@@ -79,6 +79,10 @@ following values:
       <TD vAlign=top bgColor=#cccccc><B>BackButtonText</B></TD>
       <TD vAlign=top bgColor=#cccccc><I>(optional)</I></TD>
       <TD vAlign=top bgColor=#eeeeee>Overrides the text for the back button. If not specified, the back button text will not be changed. Recommended value: "< Back"</TD></TR>
+	<TR>
+      <TD vAlign=top bgColor=#cccccc><B>Rect</B></TD>
+      <TD vAlign=top bgColor=#cccccc><I>(optional)</I></TD>
+      <TD vAlign=top bgColor=#eeeeee>Overrides the default rect ID to run over. This will make IO resize itself according to a different rect than NSIS's dialogs rect.</TD></TR>
 </TBODY></TABLE></UL>
 <P>Each field section has the heading "Field #" where # must be sequential
 numbers from 1 to NumFields. Each Field section contains the following values: