Improve the looks of the listing a bit.

Fixing some reference styles and shrink the size of the text.

doc/design/gui2.sty

@@ -1,11 +1,12 @@
 \usepackage{listings}
 \lstset{
-	  numbers = left
+	  basicstyle=\footnotesize
+	, numbers = left
 	, showstringspaces = false
 	, tabsize = 4
 	, frame = single
-	, xrightmargin = -7em
-	, xleftmargin = -7em
+	, xrightmargin = -3.6em
+	, xleftmargin = -3.6em
 }
 
 \lstdefinestyle{C++}{
@@ -15,5 +16,5 @@
 \lstdefinelanguage{WML}{}
 \lstdefinestyle{WML}{
 	  language = WML
-	, escapeinside = {\#*@}{@*\#}}
+	, escapeinside = {/*@}{@*/}}