diff --git a/cli/lf.sh b/cli/lf.sh
index 394591d..80b809f 100755
--- a/cli/lf.sh
+++ b/cli/lf.sh
@@ -10,7 +10,9 @@ fi
 log 'Setting up lf'
 
 # install lf
-env GOPROXY= CGO_ENABLED=0 GO111MODULE=on go get -u -ldflags="-s -w" github.com/gokcehan/lf
+if ! has_cmd "lf"; then
+    env GOPROXY= CGO_ENABLED=0 GO111MODULE=on go get -u -ldflags="-s -w" github.com/gokcehan/lf
+fi
 
 # linking configuration files
 lnsf "$DIR/lf/lfrc" "$XDG_CONFIG_HOME/lf/lfrc"
diff --git a/cli/lf/lfrc b/cli/lf/lfrc
index cd43a86..8a12a28 100644
--- a/cli/lf/lfrc
+++ b/cli/lf/lfrc
@@ -1,13 +1,9 @@
 set drawbox
 set icons
+
 cmd mkdir %mkdir "$@"
-
 cmd copyfilepath %echo "$f" | xsel -b
-map Yp copyfilepath
-
 cmd copyfilename %basename "$f" | xsel -b
-map Yn copyfilename
-
 cmd pasteoverwrite %{{
     load=$(lf -remote 'load')
     mode=$(echo "$load" | sed -n '1p')
@@ -20,4 +16,8 @@ cmd pasteoverwrite %{{
     lf -remote 'send load'
     lf -remote 'send clear'
 }}
+cmd e $$EDITOR "$@"
+
+map Yp copyfilepath
+map Yn copyfilename
 map P pasteoverwrite
diff --git a/win/wsl.md b/win/wsl.md
new file mode 100644
index 0000000..56cdc0f
--- /dev/null
+++ b/win/wsl.md
@@ -0,0 +1,40 @@
+# GUI
+
+## X11 for Windows
+
+1. download and install [vcxsrc](https://sourceforge.net/projects/vcxsrv/)
+2. double click on XLaunch to launch vcxsrc for Windows
+3. put following setting to `~/.profile.fish`
+```fish
+set -gx DISPLAY (winip):0.0
+# window size scaling factor
+set -gx GDK_SCALE 0.5
+# dpi scaling factor
+set -gx GDK_DPI_SCALE 2
+```
+
+## PulseAudio for Windows
+
+### Windows Part
+1. download and extract [pluseaudio](https://www.freedesktop.org/wiki/Software/PulseAudio/Ports/Windows/Support/) to your preferred location
+2. append following line to `etc/default.pa`:
+```
+load-module module-native-protocol-tcp auth-ip-acl=127.0.0.1;172.16.0.0/12
+```
+3. append following line to `etc/daemon.conf`:
+```
+exit-idle-time = -1
+```
+4. run `bin/pulseaudio.exe` on `cmd/powershell` to start up pulaudio-server for testing
+5. using `nssm` [nssm](https://nssm.cc/download) to make `pulseaudio` run as system service
+
+### WSL Part
+1. install package
+```sh
+sudo apt install libpulse0
+```
+2. setup environment variables on `~/.profile.fish`:
+```fish
+set -gx PULSE_SERVER tcp:(winip)
+```
+3. play sound using `ffplay` to test