diff --git a/Makefile b/Makefile
index b3e3353..a58f7a4 100644
--- a/Makefile
+++ b/Makefile
@@ -51,10 +51,10 @@ DOC := ./scripts/cls2tex.sh
 # NOTE: this is a bit ugly, but allot less so than trying to push \verb
 # 		into a LaTeX macro/env and then getting it out again in one pice...
 %-meta.tex: %.sty
-	$(DOC) $< $@ M
+	$(DOC) -p M $< $@
 
 %-meta.tex: %.cls
-	$(DOC) $< $@ M
+	$(DOC) -p M $< $@
 
 
 
diff --git a/photobook.cls b/photobook.cls
index b253796..e8bf0c0 100644
--- a/photobook.cls
+++ b/photobook.cls
@@ -151,9 +151,9 @@
 %% be aligned relative to a page, it can fill a page, a cell can even be
 %% horizontally split to fill several pages (how spreads are implemented).
 %% 
-%% On top of the |cell|, page and spread concepts |photobook| also builds
-%% a set of configurable high level macros/templates for common use cases
-%% like full bleed image spreads, etc.
+%% On top of the |cell|, page, and spread concepts, |photobook| also builds
+%% a set of configurable high level macros and templates for common use 
+%% cases like full bleed image spreads, etc.
 %
 %
 %%%% Usage
diff --git a/scripts/cls2tex.sh b/scripts/cls2tex.sh
index 408354a..a085ba5 100755
--- a/scripts/cls2tex.sh
+++ b/scripts/cls2tex.sh
@@ -1,16 +1,36 @@
 #!/usr/bin/env bash
 
+SCRIPT_NAME=$(basename $0)
+
+printusage(){
+	echo "Usage:"
+	echo "  $SCRIPT_NAME [OPTIONS] INPUT OUTPUT"
+}
+
+printerror(){
+	echo Error: $@
+	echo
+	printusage
+}
+
 printhelp(){
 	echo "Generate docs from latex package/class"
 	echo
-	echo "Usage: $(basename $0) [-h|--help] INPUT OUTPUT [PREFIX]"
+	printusage
+	echo
+	echo "Options:"
+	echo "  -h | --help         Show this message and exit"
+	echo "  -p | --prefix PREFIX"
+	echo "                      Set the doc comment PREFIX (default: \"%\")"
 	echo
 	echo "This will:"
+	echo "  - read the INPUT"
 	echo "  - keep lines starting with \\def\\<module-name>@[A-Z]\\+"
 	echo "  - keep lines starting with '%%'"
 	echo "  - %%%%% Text -> \\subsection(Text)"
 	echo "  - %%%% Text -> \\section(Text)"
 	echo "  - %% >> code -> \\begin{verbatim}code\\end{verbatim}"
+	echo "  - write the result to OUTPUT"
 	echo
 	echo "PREFIX can replace the second \"%\" in the above patterns to make it"
 	echo "possible to integrate multiple layers of documentation in one file"
@@ -28,13 +48,29 @@ printhelp(){
 	echo "      in both the repo and in installed form, so .dtx is not used."
 }
 
-# args/defaults...
+
+# defaults...
+PREFIX=%
+
+# args...
 while true ; do
 	case $1 in
 		-h|--help)
 			printhelp
 			exit
 			;;
+		-p|--prefix)
+			shift
+			PREFIX=$1
+			shift
+			continue
+			;;
+
+		# handle unknown options...
+		-*|--*)
+			printerror "unknown option \"$1\""
+			exit
+			;;
 
 		*)
 			break
@@ -46,11 +82,12 @@ INPUT=$1
 
 OUTPUT=$2
 
-PREFIX=$3
-if [ -z $PREFIX ] ; then
-	PREFIX=%
+if [ -z $INPUT ] || [ -z $OUTPUT ] ; then
+	printerror "need both INPUT and OUTPUT present."
+	exit
 fi
 
+
 # generate the module name...
 MODULE=$(basename "$INPUT")
 MODULE=${MODULE/.*/}