diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..6bb8a29
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>
\ No newline at end of file
diff --git a/README.md b/README.md
index be8e998..eec1ba9 100644
--- a/README.md
+++ b/README.md
@@ -36,21 +36,25 @@ __Enjoy!__
 
 # FAQ
 
+## License?
+
+[Do what you want with it](./LICENSE) license.
+
 ## Will it run under _whatever-OS_?
 
-Only Linux and Unix flavors.
+Only GNU/Linux and Unix flavors.
 
 ## What OS are you using?
 
-OSX 10.11.3 "El Capitan"
+Ubuntu 17.10.
 
 ## What about your terminal emulator?
 
-[iTerm2](https://iterm2.com/)
+[Tilix](https://gnunn1.github.io/tilix-web/)
 
 ## And your color palette?
 
-[Dracula](https://zenorocha.github.io/dracula-theme/iterm/)
+Custom, based on Atom's "One Dark" theme.
 
 ## Contributors
 
diff --git a/screenshot.png b/screenshot.png
index c1d9c6b..4c05329 100644
Binary files a/screenshot.png and b/screenshot.png differ
diff --git a/tree-EN.sh b/tree-EN.sh
index b4b139c..54f1186 100755
--- a/tree-EN.sh
+++ b/tree-EN.sh
@@ -9,7 +9,7 @@ est=$((c-2))
 color=0
 tput setaf 2; tput bold
 
-# Arbolito
+# Tree
 for ((i=1; i<20; i+=2))
 {
     tput cup $lin $col
@@ -23,7 +23,7 @@ for ((i=1; i<20; i+=2))
 
 tput sgr0; tput setaf 3
 
-# Tronco
+# Trunk
 for ((i=1; i<=2; i++))
 {
     tput cup $((lin++)) $c
@@ -37,27 +37,26 @@ tput cup $((lin + 1)) $((c - 10)); echo And lots of CODE in $new_year
 let c++
 k=1
 
-# Lucecitas y bolitas
+# Lights and decorations
 while true; do
     for ((i=1; i<=35; i++)) {
-        # Apagar luces
+        # Turn off the lights
         [ $k -gt 1 ] && {
             tput setaf 2; tput bold
-            tput cup ${linea[$[k-1]$i]} ${columna[$[k-1]$i]}; echo \*
-            unset linea[$[k-1]$i]; unset columna[$[k-1]$i]  # Limpiar el array
+            tput cup ${line[$[k-1]$i]} ${column[$[k-1]$i]}; echo \*
+            unset line[$[k-1]$i]; unset column[$[k-1]$i]  # Array cleanup
         }
 
         li=$((RANDOM % 9 + 3))
-        inicio=$((c-li+2))
-        fin=$((c+li+2))
-        co=$((RANDOM % (li-2) * 2 + 1 + inicio))
-        tput setaf $color; tput bold   # cambiar colorcitos
+        start=$((c-li+2))
+        co=$((RANDOM % (li-2) * 2 + 1 + start))
+        tput setaf $color; tput bold   # Switch colors
         tput cup $li $co
         echo o
-        linea[$k$i]=$li
-        columna[$k$i]=$co
+        line[$k$i]=$li
+        column[$k$i]=$co
         color=$(((color+1)%8))
-        # Texto flashero
+        # Flashing text
         sh=1
         for l in C O D E
         do
diff --git a/tree-ES.sh b/tree-ES.sh
index 9fd36be..21f2fe0 100755
--- a/tree-ES.sh
+++ b/tree-ES.sh
@@ -9,7 +9,7 @@ est=$((c-2))
 color=0
 tput setaf 2; tput bold
 
-# Arbolito
+# Tree
 for ((i=1; i<20; i+=2))
 {
     tput cup $lin $col
@@ -23,42 +23,40 @@ for ((i=1; i<20; i+=2))
 
 tput sgr0; tput setaf 3
 
-# Tronco
+# Trunk
 for ((i=1; i<=2; i++))
 {
     tput cup $((lin++)) $c
     echo 'mWm'
 }
-ano_nuevo=$(date +'%Y') 
-let ano_nuevo++
+new_year=$(date +'%Y')
+let new_year++
 tput setaf 1; tput bold
 tput cup $lin $((c - 6)); echo FELICES FIESTAS
-
-tput cup $((lin + 1)) $((c - 9)); echo Y mucho CODIGO en $ano_nuevo 
+tput cup $((lin + 1)) $((c - 9)); echo Y mucho CODIGO en $new_year
 let c++
 k=1
 
-# Lucecitas y bolitas
+# Lights and decorations
 while true; do
     for ((i=1; i<=35; i++)) {
-        # Apagar luces
+        # Turn off the lights
         [ $k -gt 1 ] && {
             tput setaf 2; tput bold
-            tput cup ${linea[$[k-1]$i]} ${columna[$[k-1]$i]}; echo \*
-            unset linea[$[k-1]$i]; unset columna[$[k-1]$i]  # Limpiar el array
+            tput cup ${line[$[k-1]$i]} ${column[$[k-1]$i]}; echo \*
+            unset line[$[k-1]$i]; unset column[$[k-1]$i]  # Array cleanup
         }
 
         li=$((RANDOM % 9 + 3))
-        inicio=$((c-li+2))
-        fin=$((c+li+2))
-        co=$((RANDOM % (li-2) * 2 + 1 + inicio))
-        tput setaf $color; tput bold   # cambiar colorcitos
+        start=$((c-li+2))
+        co=$((RANDOM % (li-2) * 2 + 1 + start))
+        tput setaf $color; tput bold   # Switch colors
         tput cup $li $co
         echo o
-        linea[$k$i]=$li
-        columna[$k$i]=$co
+        line[$k$i]=$li
+        column[$k$i]=$co
         color=$(((color+1)%8))
-        # Texto flashero
+        # Flashing text
         sh=1
         for l in C O D I G O
         do