diff --git a/sh/alias/overlay.sh b/sh/alias/overlay.sh
index b2bd77f..82fe273 100644
--- a/sh/alias/overlay.sh
+++ b/sh/alias/overlay.sh
@@ -1,4 +1,5 @@
-mo() {
+orm() { a__overlay_root_mount "${@}"; }
+a__overlay_root_mount() {
 	local root="${1}"
 	if [ -z "${root}" ]; then
 		sh_log_error "No root target directory"
@@ -36,7 +37,8 @@ mo() {
 	)
 }
 
-uo() {
+oru() { a__overlay_root_unmount "${@}"; }
+a__overlay_root_unmount() {
 	(
 		if ! cd "overlay"; then
 			sh_log_error "Unable to move into overlay directory"
@@ -72,7 +74,8 @@ uo() {
 	fi
 }
 
-mr() {
+obm() { a__overlay_bind_mount "${@}"; }
+a__overlay_bind_mount() {
 	local directory
 	for directory in "dev" "dev/pts" "proc" "sys"; do
 		if ! mount --bind "/${directory}" "overlay/mount/${directory}"; then
@@ -82,18 +85,21 @@ mr() {
 	done
 }
 
-cr() {
+ocr() { a__overlay_command_root "${@}"; }
+a__overlay_command_root() {
 	chroot \
 		"overlay/mount" "${@}"
 }
 
-cru() {
+ocu() { a__overlay_command_user "${@}"; }
+a__overlay_command_user() {
 	chroot \
 		--userspec "1000:1000" \
 		"overlay/mount" "${@}"
 }
 
-ur() {
+obu() { a__overlay_bind_unmount "${@}"; }
+a__overlay_bind_unmount() {
 	local directory
 	for directory in "sys" "proc" "dev/pts" "dev"; do
 		if ! umount --lazy "overlay/mount/${directory}"; then
@@ -103,15 +109,18 @@ ur() {
 	done
 }
 
-mm() {
+omm() { a__overlay_mirror_mount "${@}"; }
+a__overlay_mirror_mount() {
 	mount --make-rslave --rbind "/deb" "overlay/mount/deb"
 }
 
-um() {
+omu() { a__overlay_mirror_unmount "${@}"; }
+a__overlay_mirror_unmount() {
 	umount --recursive "overlay/mount/deb"
 }
 
-ms() {
+ors() { a__overlay_root_squash "${@}"; }
+a__overlay_root_squash() {
 	local directory="${1}"
 	local file
 	local level="${2}"