diff --git a/api.js b/api.js
index 43795a2..3e41c00 100644
--- a/api.js
+++ b/api.js
@@ -1,88 +1,99 @@
-!function(scope) {
-  var latin = "abcdefghijklmnopqrstuvwxyz"
-  var bet = latin
-  var join = "".join
-  var split = "".split
-  var lower = "".toLowerCase
-  var digit = /^\d+$/
-  var round = Math.round
-  var repeating = /^(.)\1+$/
-  var glyph = /[\u0300-\u036f]/g
-  var norm = "".normalize
-  var base = norm ? bass : basic
+!function(esta) {
+  var api = create()
+  var nombre = "numerologia"
+  typeof module != "undefined" && module.exports
+    ? module.exports = api
+    : esta[nombre] = api
 
-  function bass(txt) {
-    return norm.call(txt, "NFD").replace(glyph, "")
-  }
+  function create(bet) {
+    var latin = "abcdefghijklmnopqrstuvwxyz"
+    var join = "".join
+    var split = "".split
+    var lower = "".toLowerCase
+    var digit = /^\d+$/
+    var round = Math.round
+    var repeating = /^(.)\1+$/
+    var glyph = /[\u0300-\u036f]/g
+    var norm = "".normalize
+    var base = norm ? bass : basic
+    bet = bet ? lower.call(bet) : latin
 
-  function basic(txt) {
-    return "" + txt
-  }
+    function bass(txt) {
+      return norm.call(txt, "NFD").replace(glyph, "")
+    }
 
-  function key(n) {
-    return modulo(digit.test(n) ? n : place(n))
-  }
+    function basic(txt) {
+      return "" + txt
+    }
 
-  function modulo(n) {
-    return +n ? n % 9 || 9 : 0
-  }
+    function key(n) {
+      return modulo(digit.test(n) ? n : place(n))
+    }
 
-  function place(letter) {
-    letter = base(lower.call(letter))
-    return bet.indexOf(letter) + 1
-  }
+    function modulo(n) {
+      return +n ? n % 9 || 9 : 0
+    }
 
-  function stack(txt) {
-    var how = txt instanceof Array ? join : split
-    return how.call(txt, "")
-  }
+    function place(letter) {
+      letter = base(lower.call(letter))
+      return bet.indexOf(letter) + 1
+    }
 
-  function suma(txt) {
-    txt = stack(txt)
-    var i = txt.length
-    var suma = 0
-    var next
-    while (i--) {
-      next = txt[i]
-      next =  key(next)
-      suma += next > 0 ? +next : 0
+    function stack(txt) {
+      var how = txt instanceof Array ? join : split
+      return how.call(txt, "")
     }
-    return round(suma)
-  }
 
-  function raiz(txt) {
-    var n = suma(txt)
-    return n < 10 ? n : raiz(n)
-  }
+    function suma(txt) {
+      txt = stack(txt)
+      var i = txt.length
+      var suma = 0
+      var next
+      while (i--) {
+        next = txt[i]
+        next =  key(next)
+        suma += next > 0 ? +next : 0
+      }
+      return round(suma)
+    }
 
-  function numero(txt) {
-    var n = suma(txt)
-    return n < 10 || rep(n) ? n : numero(n)
-  }
+    function raiz(txt) {
+      var n = suma(txt)
+      return n < 10 ? n : raiz(n)
+    }
 
-  function rep(dig) {
-    return repeating.test(dig)
-  }
+    function numero(txt) {
+      var n = suma(txt)
+      return n < 10 || rep(n) ? n : numero(n)
+    }
 
-  function api(method, txt) {
-    return api[method](txt)
-  }
+    function rep(dig) {
+      return repeating.test(dig)
+    }
 
-  api.base = base
-  api.bass = bass
-  api.basic = basic
-  api.key = key
-  api.modulo = modulo
-  api.num = numero
-  api.numero = numero
-  api.place = place
-  api.raiz = raiz
-  api.rep = rep
-  api.root = raiz
-  api.sum = suma
-  api.suma = suma
+    function rep(dig) {
+      return repeating.test(dig)
+    }
 
-  typeof module != "undefined" && module.exports
-    ? module.exports = api
-    : scope.numerologia = api
+    function api(method, txt) {
+      return api[method](txt)
+    }
+
+    api.base = base
+    api.bass = bass
+    api.basic = basic
+    api.create = create
+    api.key = key
+    api.modulo = modulo
+    api.num = numero
+    api.numero = numero
+    api.place = place
+    api.raiz = raiz
+    api.rep = rep
+    api.root = raiz
+    api.sum = suma
+    api.suma = suma
+
+    return api
+  }
 }(this)
diff --git a/test.js b/test.js
index 7f86deb..c76f13e 100644
--- a/test.js
+++ b/test.js
@@ -63,6 +63,7 @@ assert.ok(api.suma === api.sum)
 console.log("ok alias")
 
 assert.ok(api("raiz", 11) === api.raiz("11"))
+assert.ok(api.create("!@#").raiz("!!") === 2)
 console.log("ok api")
 
 console.log("=)\n")
diff --git a/www.js b/www.js
index 8d94ad7..707ae1b 100644
--- a/www.js
+++ b/www.js
@@ -1,5 +1,5 @@
-!function(scope) {
-  var api = scope.numerologia
+!function(esta) {
+  var api = esta.numerologia
   var form = document.getElementById("formulario")
   var key = "_"
   var text = form[key]