Try to use l3keys.

packages/Layout.sty

@@ -4,9 +4,7 @@
 % Suppress warning about \showhyphens being changed.
 \let\CheckCommand\providecommand
 
-\RequirePackage{ifthen}
-
-\NewDocumentCommand{\providelength}{m O{0pt}}{%
+\NewDocumentCommand{\ProvideLength}{m O{0pt}}{%
 	\ifdeflength{#1}{% It is already defined!
 	}{% Not defined, so define it!
 		\newlength{#1}%
@@ -60,8 +58,8 @@
 \RequirePackage{calc}
 \RequirePackage[strict]{changepage}
 
-\providelength{\marparwidth}[\marginparsep + \marginparwidth]
-\providelength{\contentwidth}[\textwidth + \marparwidth]
+\ProvideLength{\marparwidth}[\marginparsep + \marginparwidth]
+\ProvideLength{\contentwidth}[\textwidth + \marparwidth]
 
 \RequirePackage[
 	debug,
@@ -114,10 +112,11 @@
 	}%
 }{}
 
-\newcommand{\bigfloatoffsetratio}{2}
+\newcommand{\bigfloatoffsetratio}{2.0}
 
 % Maximum width adjustment to fit 2 16x9 screensots on one page.
-\providelength{\bigfloatoverhang}[0.54in]
+\ProvideLength{\bigfloatoverhang}[0.54in]
+\newcommand{\bigfloatplacement}{htpb}
 
 \floatstyle{plain}
 \newfloat{generic}{htpb}{lgf}
@@ -128,9 +127,9 @@
 	% #2: Overhang: the distance that the BigFloat extends into the margins.
 	O{\bigfloatoverhang} 
 	% #3: Float position: where the float may appear on the page.
-	O{htpb} 
-	% #4: Offset: the distance to offset the center of the BigFloat from the center
-	%     of the text block.
+	O{\bigfloatplacement} 
+	% #4: Offset: the ratio between the overhangs on the inside and outside of 
+	%     BigFloat.
 	O{\bigfloatoffsetratio} 
 	% #5: Body: what appears in the BigFloat.
 	+b
@@ -148,4 +147,49 @@
 			\end{minipage}%
 		\end{SmartAdjustWidth}%
 	\end{#1}%
-}{}
+}{}
+
+\AtBeginDocument{
+	\ifthenelse{\boolean{isElectronic}}{
+		\newgeometry{
+			inner	= 0.75in,
+			top		= 66pt,	% 11/12in
+			marginratio = 2:3,
+		}
+		\savegeometry{smallMargin}
+		\newgeometry{
+			inner	= 24pt,	% 1/3in
+			top		= 0.25in,
+			marginratio = 2:3,
+		}
+		\savegeometry{tinyMargin}
+	}{
+		\newgeometry{
+			twoside	= true,
+			inner	= 0.75in,
+			top		= 66pt,	% 11/12in
+			marginratio = 2:3,
+		}
+		\savegeometry{smallMargin}
+		\newgeometry{
+			twoside	= true,
+			inner	= 24pt,	% 1/3in
+			top		= 0.25in,
+			marginratio = 2:3,
+		}
+		\savegeometry{tinyMargin}
+	}
+	\restoregeometry
+
+	\NewDocumentEnvironment{SmallMargin}{O{0.0in} O{-0.25in}}{
+		\clearpage
+		\loadgeometry{smallMargin}
+		\setlength{\insideheaderoffset}{#1}
+		\setlength{\outsideheaderoffset}{#2}
+		\pagestyle{fancy}
+	}{
+		\clearpage
+		\pagestyle{fancy}
+		\restoregeometry
+	}
+}