Use US paper size.
diff --git a/Doc/myformat.sty b/Doc/myformat.sty
index 7bb1ef9..c4db0d1 100644
--- a/Doc/myformat.sty
+++ b/Doc/myformat.sty
@@ -4,18 +4,18 @@
\sloppy
% A4 page lay-out parameters
-\textwidth = 160mm
-\textheight = 240mm
-\topmargin = -11mm
+%\textwidth = 160mm
+%\textheight = 240mm
+%\topmargin = -11mm
% Americal page lay-out parameters
-%\textwidth = 160mm
-%\textheight = 220mm
-%\topmargin = -11mm
+\textwidth = 160mm
+\textheight = 220mm
+\topmargin = -11mm
\oddsidemargin = 0mm
\evensidemargin = 0mm
-%\parindent = 0mm
+%\parindent = 0mm
% Frequently used system name
\newcommand{\UNIX}{U{\sc nix}}