diff --git a/scripts/Bootstrap/Pmodules/bash b/scripts/Bootstrap/Pmodules/bash
index 7aeaee6..121d92f 100644
--- a/scripts/Bootstrap/Pmodules/bash
+++ b/scripts/Bootstrap/Pmodules/bash
@@ -134,22 +134,22 @@ save_env() {
 #
 declare -x LOADEDMODULES=''
 declare -x _LMFILES_=''
-declare -x PSI_LOADEDFAMILIES=''
+declare -x PMODULES_USED_GROUPS=''
 declare -x MODULEPATH=''
-for f in ${PSI_DEFAULT_FAMILIES//:/ }; do
+for f in ${PMODULES_DEFAULT_GROUPS//:/ }; do
 	append_path MODULEPATH "${PSI_PREFIX}/${PSI_MODULES_ROOT}/$f"
-	append_path PSI_LOADEDFAMILIES "${f}"
+	append_path PMODULES_USED_GROUPS "${f}"
 done
 declare -x USED_RELEASES=''
-for r in ${PSI_DEFAULT_RELEASES//:/ }; do
+for r in ${PMODULES_DEFAULT_RELEASES//:/ }; do
 	append_path USED_RELEASES "${r}"
 done
 
-eval $(save_env USED_RELEASES PSI_DEFAULT_RELEASES PSI_DEFAULT_FAMILIES PSI_DEFINED_RELEASES)
+eval $(save_env USED_RELEASES PMODULES_DEFAULT_RELEASES PMODULES_DEFAULT_GROUPS PMODULES_DEFINED_RELEASES)
 unset USED_RELEASES
-unset PSI_DEFAULT_RELEASES
-unset PSI_DEFAULT_FAMILIES
-unset PSI_DEFINED_RELEASES
+unset PMODULES_DEFAULT_RELEASES
+unset PMODULES_DEFAULT_GROUPS
+unset PMODULES_DEFINED_RELEASES
 
 replace_path PATH    "${PMODULES_HOME%/*}/.*"
 replace_path MANPATH "${PMODULES_HOME%/*}/.*"
diff --git a/scripts/Bootstrap/Pmodules/environment.bash.in b/scripts/Bootstrap/Pmodules/environment.bash.in
index 11a5623..240d3c5 100644
--- a/scripts/Bootstrap/Pmodules/environment.bash.in
+++ b/scripts/Bootstrap/Pmodules/environment.bash.in
@@ -11,6 +11,6 @@ declare -x PSI_CONFIG_DIR=$(basename $(cd $(dirname "${BASH_SOURCE}") && pwd))
 declare -x PSI_MODULES_ROOT='modulefiles'
 declare -x PSI_TEMPLATES_DIR='templates'
 
-declare -x PSI_DEFAULT_FAMILIES='Tools Programming'
-declare -x PSI_DEFAULT_RELEASES='stable'
-declare -x PSI_DEFINED_RELEASES=':unstable:stable:deprecated:'
+declare -x PMODULES_DEFAULT_GROUPS='Tools Programming'
+declare -x PMODULES_DEFAULT_RELEASES='stable'
+declare -x PMODULES_DEFINED_RELEASES=':unstable:stable:deprecated:'
diff --git a/scripts/Bootstrap/Pmodules/libmodules.tcl b/scripts/Bootstrap/Pmodules/libmodules.tcl
index f1a355e..284ad9a 100644
--- a/scripts/Bootstrap/Pmodules/libmodules.tcl
+++ b/scripts/Bootstrap/Pmodules/libmodules.tcl
@@ -46,9 +46,9 @@ proc set-family { family } {
 	if { [module-info mode load] } {
 		debug "mode is load"
 		append-path MODULEPATH ${::MODULE_ROOT_PATH}/${family}/${Implementation}
-		append-path PSI_LOADEDFAMILIES ${family}
+		append-path PMODULES_USED_GROUPS ${family}
 		debug "mode=load: new MODULEPATH=$env(MODULEPATH)"
-		debug "mode=load: new PSI_LOADEDFAMILIES=$env(PSI_LOADEDFAMILIES)"
+		debug "mode=load: new PMODULES_USED_GROUPS=$env(PMODULES_USED_GROUPS)"
 	} elseif { [module-info mode remove] } {
 		# remove orphan modules
 		debug "remove orphan modules"
@@ -64,14 +64,14 @@ proc set-family { family } {
 			}
 		}
 		remove-path MODULEPATH ${::MODULE_ROOT_PATH}/${family}/${Implementation}
-		remove-path PSI_LOADEDFAMILIES ${family}
+		remove-path PMODULES_USED_GROUPS ${family}
 		debug "mode=remove: $env(MODULEPATH)"
-		debug "mode=remove: $env(PSI_LOADEDFAMILIES)"
+		debug "mode=remove: $env(PMODULES_USED_GROUPS)"
 	}
 	if { [module-info mode switch2] } {
 		debug "mode=switch2"
 		append-path MODULEPATH ${::MODULE_ROOT_PATH}/${family}/[module-info name]
-		append-path PSI_LOADEDFAMILIES ${family}
+		append-path PMODULES_USED_GROUPS ${family}
 	}
 }
 
diff --git a/scripts/Bootstrap/Pmodules/modulecmd.in b/scripts/Bootstrap/Pmodules/modulecmd.in
index 9cbaa6a..3c52daf 100755
--- a/scripts/Bootstrap/Pmodules/modulecmd.in
+++ b/scripts/Bootstrap/Pmodules/modulecmd.in
@@ -48,7 +48,7 @@ export_env() {
 	done
 }
 
-trap 'save_env FAMILIES HIERARCHY_DEPTHS USED_RELEASES PSI_DEFAULT_FAMILIES PSI_DEFINED_RELEASES PSI_DEFAULT_RELEASES' EXIT
+trap 'save_env FAMILIES HIERARCHY_DEPTHS USED_RELEASES PMODULES_DEFAULT_GROUPS PMODULES_DEFINED_RELEASES PMODULES_DEFAULT_RELEASES' EXIT
 
 print_version() {
 	echo "
@@ -423,19 +423,19 @@ get_release() {
 	return 0
 }
 
-: ${PSI_DEFINED_RELEASES:=':unstable:stable:deprecated:'}
+: ${PMODULES_DEFINED_RELEASES:=':unstable:stable:deprecated:'}
 
 declare used_releases=":${USED_RELEASES}:"
 
 is_release() {
-	[[ ${PSI_DEFINED_RELEASES} =~ :$1: ]]
+	[[ ${PMODULES_DEFINED_RELEASES} =~ :$1: ]]
 }
 
 is_used_release() {
 	[[ ${used_releases} =~ :$1: ]]
 }
 
-declare used_families=":${PSI_LOADEDFAMILIES}:"
+declare used_families=":${PMODULES_USED_GROUPS}:"
 
 is_used_family() {
 	[[ ${used_families} =~ :$1: ]]
@@ -656,7 +656,7 @@ subcommand_load() {
 	# Args:
 	#	none
 	output_load_hints() {
-		local -ra rels=( ${PSI_DEFINED_RELEASES//:/ } )
+		local -ra rels=( ${PMODULES_DEFINED_RELEASES//:/ } )
 		for rel in "${rels[@]}"; do
 			eval $( subcommand_use "${rel}" )
 			if is_available "${m}"; then
@@ -804,9 +804,10 @@ subcommand_avail() {
 	cols=$(tput cols)
 
 	output_header() {
-		let i=($cols-${#dir})/2-2
+		local -r caption=${dir/${modulepath_root}\/}
+		let i=($cols-${#caption})/2-2
 		printf -- "%0.s-" $(seq 1 $i) 1>&2
-		printf -- " %s " "${dir}" 1>&2
+		printf -- " %s " "${caption}" 1>&2
 		printf -- "%0.s-" $(seq 1 $i) 1>&2
 		printf -- "\n" 1>&2
 	}
@@ -978,11 +979,11 @@ subcommand_use() {
 	print_info() {
 		local f
 		local r
-		info "Used families:"
+		info "Used groups:"
 		for f in ${used_families//:/ }; do
 			info "\t${f}"
 		done
-		info "\nFamilies you may use in addition:"
+		info "\nUnused groups:"
 		for family in "${FAMILIES[@]}"; do
 			local -i depth=${HIERARCHY_DEPTHS[$family]}
 			if ! is_used_family "${family}" && (( depth == 0 )); then
@@ -994,8 +995,8 @@ subcommand_use() {
 		for r in ${used_releases//:/ }; do
 			info "\t${r}"
 		done
-		info "\nReleases you may use in addition:"
-		for r in ${PSI_DEFINED_RELEASES//:/ }; do
+		info "\nUnused releases:"
+		for r in ${PMODULES_DEFINED_RELEASES//:/ }; do
 			if ! is_used_release $r; then
 				info "\t${r}"
 			fi
@@ -1032,7 +1033,7 @@ subcommand_use() {
 				if (( ${HIERARCHY_DEPTHS[$arg]} != 0 )); then
 					die 3 "${CMD} ${0##_}: cannot add family ${arg} to module path"
 				fi
-				append_path PSI_LOADEDFAMILIES "${arg}"
+				append_path PMODULES_USED_GROUPS "${arg}"
 			       	dirs_to_add+=( ${modulepath_root}/${arg} )
 			elif [[ ${arg} =~ ^${modulepath_root} ]]; then
 				die 3 "${CMD} ${0##_}: illegal directory: ${arg}"
@@ -1046,7 +1047,7 @@ subcommand_use() {
 			fi
 			shift
 		done
-		echo "export PSI_LOADEDFAMILIES=${PSI_LOADEDFAMILIES}"
+		echo "export PMODULES_USED_GROUPS=${PMODULES_USED_GROUPS}"
 		[[ ${#dirs_to_add[@]} == 0 ]] && return
 
 		for dir in "${dirs_to_add[@]}"; do
@@ -1172,18 +1173,18 @@ subcommand_clear() {
 		esac
 	done
 	LOADEDMODULES=''
-	PSI_LOADEDFAMILIES=''
+	PMODULES_USED_GROUPS=''
 	MODULEPATH=''
 	_LMFILES_=''
-	for f in ${PSI_DEFAULT_FAMILIES}; do
+	for f in ${PMODULES_DEFAULT_GROUPS}; do
 		append_path MODULEPATH "${PSI_PREFIX}/${PSI_MODULES_ROOT}/$f"
-		append_path PSI_LOADEDFAMILIES "${f}"
+		append_path PMODULES_USED_GROUPS "${f}"
 	done
 	USED_RELEASES=''
-	for r in ${PSI_DEFAULT_RELEASES//:/ }; do
+	for r in ${PMODULES_DEFAULT_RELEASES//:/ }; do
 		append_path USED_RELEASES "${r}"
 	done
-	export_env LOADEDMODULES PSI_LOADEDFAMILIES MODULEPATH _LMFILES_
+	export_env LOADEDMODULES PMODULES_USED_GROUPS MODULEPATH _LMFILES_
 }
 
 #
@@ -1298,7 +1299,7 @@ subcommand_search() {
 				shift
 				;;
 			-a | --all-releases )
-				use_releases="${PSI_DEFINED_RELEASES}"
+				use_releases="${PMODULES_DEFINED_RELEASES}"
 				;;
 			--src )
 				src_prefix=$2
diff --git a/scripts/Tools/emacs/build b/scripts/Tools/emacs/build
index 13774aa..06f595c 100755
--- a/scripts/Tools/emacs/build
+++ b/scripts/Tools/emacs/build
@@ -28,6 +28,7 @@ function em.configure() {
 		--prefix="${PREFIX}" \
 		${configure_args} \
 		|| exit 1
+	install -m 0755 -d "${PREFIX}"
 }
 
 function em.post_install() {