diff --git a/.gitignore b/.gitignore
index b170f92..7374a5a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+I38_preferences.conf
 **/__pycache__/
 *.pyc
 *.pyo
diff --git a/i38.sh b/i38.sh
index 883e0b0..fa1ecc4 100755
--- a/i38.sh
+++ b/i38.sh
@@ -15,6 +15,7 @@
 usingSway=1 # Not by default.
 i3Path="${XDG_CONFIG_HOME:-$HOME/.config}/i3"
 i3msg="i3-msg"
+configFile="${PWD}/I38_preferences.conf"
 
 # Dialog accessibility
 export DIALOGOPTS='--no-lines --visit-items'
@@ -28,7 +29,7 @@ done
 if ! python3 -c 'import i3ipc' &> /dev/null ; then
     missing+=("python-i3ipc")
 fi
-if [[ -n "${missing}" ]]; then
+if [[ ${#missing[@]} -gt 0 ]]; then
     echo "Please install the following packages and run this script again:"
     echo "${missing[*]}"
     exit 1
@@ -175,7 +176,7 @@ yesno() {
     # Returns: Yes 0 or No 1
     # Args: Question to user.
     dialog --clear --title "I38" --yesno "$*" -1 -1 --stdout
-    echo $?
+    return $?
 }
 
 # Custom application keybinding functions
@@ -333,7 +334,80 @@ addCustomApplication() {
             break
         done
     done
-} 
+}
+
+load_config() {
+    # Load existing configuration if available
+    if [[ -f "$configFile" ]]; then
+        # shellcheck source=/dev/null
+        source "$configFile"
+
+        # Convert kbd string back to array if present
+        if [[ -n "$kbd" ]]; then
+            IFS=' ' read -ra kbd <<< "$kbd"
+        fi
+
+        # Reconstruct customApps array from numbered entries
+        customApps=()
+        local i=0
+        local varName
+        while : ; do
+            varName="customApp_$i"
+            if [[ -n "${!varName}" ]]; then
+                customApps+=("${!varName}")
+                ((i++))
+            else
+                break
+            fi
+        done
+
+        return 0
+    fi
+    return 1
+}
+
+save_config() {
+    if yesno "Save this configuration for future runs?"; then
+        cat > "$configFile" << EOF
+# I38 Configuration Preferences
+# Generated by i38.sh on $(date)
+# Edit this file to change saved preferences or delete to reconfigure from scratch
+
+# Keyboard configuration
+escapeKey="$escapeKey"
+mod="$mod"
+
+# Keyboard layouts (space-separated)
+kbd="${kbd[*]}"
+
+# Volume settings
+volumeJump="$volumeJump"
+
+# Application paths
+screenReader="$screenReader"
+emailClient="$emailClient"
+webBrowser="$webBrowser"
+textEditor="$textEditor"
+fileBrowser="$fileBrowser"
+ircClient="$ircClient"
+
+# Boolean settings (0=yes, 1=no)
+udiskie="$udiskie"
+dex="$dex"
+batteryAlert="${batteryAlert:-1}"
+brlapi="$brlapi"
+sounds="$sounds"
+
+# Custom applications
+EOF
+        # Save custom apps with numbered keys
+        for i in "${!customApps[@]}"; do
+            echo "customApp_$i=\"${customApps[$i]}\"" >> "$configFile"
+        done
+
+        dialog --title "I38" --msgbox "Configuration saved to $configFile\n\nYou can edit this file manually or delete it to reconfigure from scratch." 0 0
+    fi
+}
 
 help() {
     echo "${0##*/}"
@@ -344,6 +418,9 @@ help() {
     for i in "${!command[@]}" ; do
         echo "-${i/:/ <parameter>}: ${command[${i}]}"
     done | sort
+    echo ""
+    echo "Configuration preferences can be saved to I38_preferences.conf in the current directory."
+    echo "Delete this file to reconfigure from scratch."
     exit 0
 }
 
@@ -378,8 +455,7 @@ chmod +x ~/.xinitrc
 
 write_xprofile() {
 if [[ -f "$HOME/.xprofile" ]]; then
-continue="$(yesno "Would you like to add accessibility variables to your $HOME/.xprofile? Without these, accessibility will be limited or may not work at all. Do you want to continue?")"
-if [ "$continue" = "no" ]; then
+if ! yesno "Would you like to add accessibility variables to your $HOME/.xprofile? Without these, accessibility will be limited or may not work at all. Do you want to continue?"; then
 exit 0
 fi
 fi
@@ -467,6 +543,13 @@ while getopts "${args}" i ; do
     esac
 done
 
+# Load saved configuration if available
+configLoaded=0
+if load_config; then
+    configLoaded=1
+    dialog --title "I38" --msgbox "Loaded saved preferences from $configFile\n\nMissing or invalid values will be prompted." 0 0
+fi
+
 # Mod1 alt
 # Mod4 super
 # Mod2 and Mod3 not usually defined.
@@ -475,155 +558,224 @@ done
 # Ratpoison mode is enabled by default
 export i3Mode=0
 # Prevent setting ratpoison mode key to the same as default mode key
-while [[ "$escapeKey" == "$mod" ]] || [[ "$escapeKey" =~ ^Super_ && "$mod" == "Mod4" ]] || [[ "$mod" == "Mod4" && "$escapeKey" =~ ^Super_ ]]; do
-    escapeKey="$(menulist "Ratpoison mode key:" Control+t Control+z Control+Escape Alt+Escape Control+space "Super Left" "Super Right")"
-    escapeKey="${escapeKey//Alt/Mod1}"
-    escapeKey="${escapeKey//Super Left/Super_L}"
-    escapeKey="${escapeKey//Super Right/Super_R}"
-    mod="$(menulist "I3 mod key, for top level bindings:" Alt Super)"
-    mod="${mod//Alt/Mod1}"
-    mod="${mod//Super/Mod4}"
-    if [ "$escapeKey" == "$mod" ]; then
-        dialog --title "I38" --msgbox "Ratpoison and mod key cannot be the same key." -1 -1
-    elif [[ "$escapeKey" =~ ^Super_ && "$mod" == "Mod4" ]]; then
-        dialog --title "I38" --msgbox "Ratpoison mode key cannot be a Super key when mod key is Super." -1 -1
-    fi
-done
-# Multiple keyboard layouts
-if [[ $(yesno "Do you want to use multiple keyboard layouts?") -eq 0 ]]; then
-    unset kbd
-    while : ; do
-        kbd+=("$(keyboard_menu)") || break
+if [[ -z "$escapeKey" ]] || [[ -z "$mod" ]]; then
+    while [[ "$escapeKey" == "$mod" ]] || [[ "$escapeKey" =~ ^Super_ && "$mod" == "Mod4" ]] || [[ "$mod" == "Mod4" && "$escapeKey" =~ ^Super_ ]]; do
+        escapeKey="$(menulist "Ratpoison mode key:" Control+t Control+z Control+Escape Alt+Escape Control+space "Super Left" "Super Right")"
+        escapeKey="${escapeKey//Alt/Mod1}"
+        escapeKey="${escapeKey//Super Left/Super_L}"
+        escapeKey="${escapeKey//Super Right/Super_R}"
+        mod="$(menulist "I3 mod key, for top level bindings:" Alt Super)"
+        mod="${mod//Alt/Mod1}"
+        mod="${mod//Super/Mod4}"
+        if [ "$escapeKey" == "$mod" ]; then
+            dialog --title "I38" --msgbox "Ratpoison and mod key cannot be the same key." -1 -1
+        elif [[ "$escapeKey" =~ ^Super_ && "$mod" == "Mod4" ]]; then
+            dialog --title "I38" --msgbox "Ratpoison mode key cannot be a Super key when mod key is Super." -1 -1
+        fi
     done
 fi
+# Multiple keyboard layouts
+if [[ ${#kbd[@]} -eq 0 ]]; then
+    if yesno "Do you want to use multiple keyboard layouts?"; then
+        unset kbd
+        while : ; do
+            kbd+=("$(keyboard_menu)") || break
+        done
+    fi
+fi
 # Volume jump
-volumeJump=$(rangebox "How much should pressing the volume keys change the volume?" 1 15 5)
+if [[ -z "$volumeJump" ]]; then
+    volumeJump=$(rangebox "How much should pressing the volume keys change the volume?" 1 15 5)
+fi
 # Screen Reader
-unset programList
-for i in cthulhu orca ; do
-    if command -v ${i/#-/} &> /dev/null ; then
-        if [ -n "$programList" ]; then
-            programList="$programList $i"
-        else
-            programList="$i"
+if [[ -z "$screenReader" ]] || ! command -v "$screenReader" &> /dev/null; then
+    unset programList
+    for i in cthulhu orca ; do
+        if command -v ${i/#-/} &> /dev/null ; then
+            if [ -n "$programList" ]; then
+                programList="$programList $i"
+            else
+                programList="$i"
+            fi
         fi
+    done
+    if [ "$programList" != "${programList// /}" ]; then
+        screenReader="$(menulist ":Screen Reader" $programList)"
+    else
+        screenReader="${programList/#-/}"
     fi
-done
-if [ "$programList" != "${programList// /}" ]; then
-    screenReader="$(menulist ":Screen Reader" $programList)"
+    export screenReader="$(command -v $screenReader)"
 else
-    screenReader="${programList/#-/}"
+    # Validate and export existing preference
+    export screenReader
 fi
-export screenReader="$(command -v $screenReader)"
 # Email client
-unset programList
-for i in betterbird evolution thunderbird ; do
-    if command -v ${i/#-/} &> /dev/null ; then
-        if [ -n "$programList" ]; then
-            programList="$programList $i"
-        else
-            programList="$i"
+if [[ -z "$emailClient" ]] || ! command -v "$emailClient" &> /dev/null; then
+    unset programList
+    for i in betterbird evolution thunderbird ; do
+        if command -v ${i/#-/} &> /dev/null ; then
+            if [ -n "$programList" ]; then
+                programList="$programList $i"
+            else
+                programList="$i"
+            fi
         fi
+    done
+    if [ "$programList" != "${programList// /}" ]; then
+        emailClient="$(menulist "Email client:" $programList)"
+    else
+        emailClient="${programList/#-/}"
     fi
-done
-if [ "$programList" != "${programList// /}" ]; then
-    emailClient="$(menulist "Email client:" $programList)"
+    export emailClient="$(command -v $emailClient)"
 else
-    emailClient="${programList/#-/}"
+    # Validate and export existing preference
+    export emailClient
 fi
-export emailClient="$(command -v $emailClient)"
 # Web browser
-unset programList
-for i in brave chromium epiphany firefox google-chrome-stable google-chrome-unstable microsoft-edge-stable microsoft-edge-beta microsoft-edge-dev midori seamonkey vivaldi ; do
-    if command -v ${i/#-/} &> /dev/null ; then
-        if [ -n "$programList" ]; then
-            programList="$programList $i"
-        else
-            programList="$i"
+if [[ -z "$webBrowser" ]] || ! command -v "$webBrowser" &> /dev/null; then
+    unset programList
+    for i in brave chromium epiphany firefox google-chrome-stable google-chrome-unstable microsoft-edge-stable microsoft-edge-beta microsoft-edge-dev midori seamonkey vivaldi ; do
+        if command -v ${i/#-/} &> /dev/null ; then
+            if [ -n "$programList" ]; then
+                programList="$programList $i"
+            else
+                programList="$i"
+            fi
         fi
+    done
+    if [ "$programList" != "${programList// /}" ]; then
+        webBrowser="$(menulist "Web browser:" $programList)"
+    else
+        webBrowser="${programList/#-/}"
     fi
-done
-if [ "$programList" != "${programList// /}" ]; then
-    webBrowser="$(menulist "Web browser:" $programList)"
+    export webBrowser="$(command -v $webBrowser)"
 else
-    webBrowser="${programList/#-/}"
+    # Validate and export existing preference
+    export webBrowser
 fi
-export webBrowser="$(command -v $webBrowser)"
 # Text editor
-unset programList
-for i in emacs geany gedit kate kwrite l3afpad leafpad libreoffice mousepad pluma ; do
-if hash ${i/#-/} &> /dev/null ; then
-if [ -n "$programList" ]; then
-programList="$programList $i"
+if [[ -z "$textEditor" ]] || ! command -v "$textEditor" &> /dev/null; then
+    unset programList
+    for i in emacs geany gedit kate kwrite l3afpad leafpad libreoffice mousepad pluma ; do
+        if hash ${i/#-/} &> /dev/null ; then
+            if [ -n "$programList" ]; then
+                programList="$programList $i"
+            else
+                programList="$i"
+            fi
+        fi
+    done
+    if [ "$programList" != "${programList// /}" ]; then
+        textEditor="$(menulist "Text editor:" $programList)"
+    else
+        textEditor="${programList/#-/}"
+    fi
+    export textEditor="$(command -v $textEditor)"
 else
-programList="$i"
+    # Validate and export existing preference
+    export textEditor
 fi
-fi
-done
-if [ "$programList" != "${programList// /}" ]; then
-textEditor="$(menulist "Text editor:" $programList)"
-else
-textEditor="${programList/#-/}"
-fi
-export textEditor="$(command -v $textEditor)"
 # File browser
-# Configure file browser
-unset programList
-for i in caja nemo nautilus pcmanfm pcmanfm-qt thunar ; do
-    if hash ${i/#-/} &> /dev/null ; then
-        if [ -n "$programList" ]; then
-            programList="$programList $i"
-        else
-            programList="$i"
+if [[ -z "$fileBrowser" ]] || ! command -v "$fileBrowser" &> /dev/null; then
+    unset programList
+    for i in caja nemo nautilus pcmanfm pcmanfm-qt thunar ; do
+        if hash ${i/#-/} &> /dev/null ; then
+            if [ -n "$programList" ]; then
+                programList="$programList $i"
+            else
+                programList="$i"
+            fi
         fi
+    done
+    if [ "$programList" != "${programList// /}" ]; then
+        fileBrowser="$(menulist "File browser:" $programList)"
+    else
+        fileBrowser="${programList/#-/}"
     fi
-done
-if [ "$programList" != "${programList// /}" ]; then
-    fileBrowser="$(menulist "File browser:" $programList)"
+    export fileBrowser="$(command -v $fileBrowser)"
 else
-    fileBrowser="${programList/#-/}"
+    # Validate and export existing preference
+    export fileBrowser
 fi
-export fileBrowser="$(command -v $fileBrowser)"
 # IRC client
-unset programList
-for i in albikirc Albikirc access-irc ; do
-    if command -v ${i/#-/} &> /dev/null ; then
-        if [ -n "$programList" ]; then
-            programList="$programList $i"
+if [[ -z "$ircClient" ]] || ! command -v "$ircClient" &> /dev/null; then
+    unset programList
+    for i in albikirc Albikirc access-irc ; do
+        if command -v ${i/#-/} &> /dev/null ; then
+            if [ -n "$programList" ]; then
+                programList="$programList $i"
+            else
+                programList="$i"
+            fi
+        fi
+    done
+    if [ "$programList" != "${programList// /}" ]; then
+        ircClient="$(menulist "IRC client:" $programList)"
+    else
+        ircClient="${programList/#-/}"
+    fi
+    export ircClient="$(command -v $ircClient)"
+else
+    # Validate and export existing preference
+    export ircClient
+fi
+# Auto mount removable media
+if [[ -z "$udiskie" ]]; then
+    udiskie=1
+    if command -v udiskie &> /dev/null ; then
+        if yesno "Would you like removable drives to  automatically mount when plugged in?"; then
+            export udiskie=0
         else
-            programList="$i"
+            export udiskie=1
         fi
     fi
-done
-if [ "$programList" != "${programList// /}" ]; then
-    ircClient="$(menulist "IRC client:" $programList)"
-else
-    ircClient="${programList/#-/}"
-fi
-export ircClient="$(command -v $ircClient)"
-# Auto mount removable media
-udiskie=1
-if command -v udiskie &> /dev/null ; then
-    export udiskie=$(yesno "Would you like removable drives to  automatically mount when plugged in?")
 fi
 # Auto start with dex
-dex=1
-if command -v dex &> /dev/null ; then
-    export dex=$(yesno "Would you like to autostart applications with dex?")
+if [[ -z "$dex" ]]; then
+    dex=1
+    if command -v dex &> /dev/null ; then
+        if yesno "Would you like to autostart applications with dex?"; then
+            export dex=0
+        else
+            export dex=1
+        fi
+    fi
 fi
 if [[ $dex -eq 0 ]]; then
     dex -t "${XDG_CONFIG_HOME:-${HOME}/.config}/autostart" -c $(command -v $screenReader)
 fi
-if command -v acpi &> /dev/null ; then
-    batteryAlert=1
-    batteryAlert=$(yesno "Do you want low battery notifications?")
+if [[ -z "$batteryAlert" ]]; then
+    if command -v acpi &> /dev/null ; then
+        if yesno "Do you want low battery notifications?"; then
+            batteryAlert=0
+        else
+            batteryAlert=1
+        fi
+    fi
+fi
+if [[ -z "$brlapi" ]]; then
+    if yesno "Do you want to use a braille display with ${screenReader##*/}?"; then
+        brlapi=0
+    else
+        brlapi=1
+    fi
+fi
+if [[ -z "$sounds" ]]; then
+    if yesno "Do you want window event sounds?"; then
+        sounds=0
+    else
+        sounds=1
+    fi
 fi
-brlapi=1
-brlapi=$(yesno "Do you want to use a braille display with ${screenReader##*/}?")
-sounds=1
-sounds=$(yesno "Do you want window event sounds?")
 # Custom applications for ratpoison mode
-addCustomApplication
+if [[ ${#customApps[@]} -eq 0 ]]; then
+    addCustomApplication
+fi
+
+# Save configuration if requested (only on first run)
+if [[ $configLoaded -eq 0 ]]; then
+    save_config
+fi
 
 if [[ -d "${i3Path}" ]]; then
     yesno "This will replace your existing configuration at ${i3Path}. Do you want to continue?" || exit 0
@@ -823,7 +975,7 @@ echo "bindsym ${mod}+Shift+F5 exec spd-say -C" >> ${i3Path}/config
 
 # Multiple keyboard layouts if requested.
 if [[ ${#kbd[@]} -gt 1 ]]; then
-    echo "bindsym Mod4+space exec ${i3Path}/scripts/keyboard.sh cycle ${kbd[@]}" >> ${i3Path}/config
+    echo "bindsym Mod4+space exec ${i3Path}/scripts/keyboard.sh cycle ${kbd[*]}" >> ${i3Path}/config
 fi
 
 # Create panel mode
@@ -887,7 +1039,7 @@ mode "ratpoison" {
 # Ratpoison mode keybindings help bound to F1
 bindsym F1 exec ${i3Path}/scripts/i38-help-rp.sh, mode "default"
 # Terminal emulator bound to c
-bindsym c exec $sensibleTerminal, mode "default"
+bindsym c exec ${i3Path}/scripts/i3-sensible-terminal.sh, mode "default"
 # Text editor bound to e
 bindsym e exec $textEditor, mode "default"
 $(if [[ ${#fileBrowser} -gt 3 ]]; then