diff --git a/lib/sde-wrapper-discriminator.in b/lib/sde-wrapper-discriminator.in
new file mode 100644
index 0000000..c21e227
--- /dev/null
+++ b/lib/sde-wrapper-discriminator.in
@@ -0,0 +1,58 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+# 
+# Filename: lib/sde-wrapper-discriminator.in
+# Copyright (C) 2008 The OpenSDE Project
+# 
+# More information can be found in the files COPYING and README.
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License. A copy of the
+# GNU General Public License can be found in the file COPYING.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+# include the generic sde_wrapper functions
+. "$SDEROOT/lib/sde-wrapper.in"
+
+# list all the valid discriminators for a given command
+#
+sde_wrapper_discriminator_list() {
+	ls -1d "$SDEROOT/bin/sde-$1-"* 2> /dev/null
+}
+
+# return the usage of every discriminator
+sde_wrapper_discriminator_help() {
+	local toy= name= desc= aliases=
+	cat <<-EOT
+	Usage:	sde $1 <discriminator> [OPTIONS] [ARGUMENTS]
+
+	Available Discriminators:
+	EOT
+	for toy in $( sde_wrapper_discriminator_list "$1" ); do
+		name=$( sde_wrapper_name "$toy" )
+		desc=$( sde_wrapper_desc "$toy" )
+		aliases=$( sde_wrapper_aliases "$toy" )
+		echo "	$name${desc:+	$desc}${aliases:+ (Alias: ${aliases// /,})}"
+	done
+	cat <<-EOT
+
+	For more information try: sde $1 <discriminator> --help
+	EOT
+	exit 1
+}
+
+sde_wrapper_discriminator() {
+	local combin= command="$1"; shift
+	if [ "$1" != "${1%-*}" ]; then
+		# trying to cheat, no dashes alowed
+		return
+	elif [ -x "$SDEROOT/bin/sde-$command-$1" ]; then
+		# discriminator given explicitly
+		echo "$1"
+	else
+		# given token may be an alias of a valid discriminator for this command
+		combin=$( grep -l "^#Alias: $1$" `sde_wrapper_discriminator_list $command` | head -n 1 )
+		echo "$discbin" | sed -e 's,.*/sde-,,'
+	fi
+}