diff --git a/js/doc/list.js b/js/doc/list.js
new file mode 100644
index 0000000..48c9b8d
--- /dev/null
+++ b/js/doc/list.js
@@ -0,0 +1,76 @@
+var NL='\n',SP=' ';
+function spaces(n) {var s=''; while(n) s+=SP,n--; return s;}
+
+/** List Constructor
+ *  typeof @options = {
+ *    type:string=' '|'*'|'-'|'+'|'1'|'2'|..|'a'|'b'|..|'dl',
+ *  }
+ */
+function List (options) {
+  this.type = options.type|| '*';
+  this.margin = options.margin || {left:0,right:0,top:0,bottom:0};
+  this.width = options.width || 80;
+  this.tab = options.tab || 2;
+  this.tab2 = options.tab || 4;
+}
+/**
+ * Inherit from Array. Each item of the list is one array element.
+ */
+
+List.prototype.__proto__ = Array.prototype;
+
+/** List formatter
+ *
+ */
+List.prototype.render
+List.prototype.toString = function (){
+  var i,self=this,ret='',line='',lines=[],label,
+      tokens,
+      textwidth=this.width-this.margin.left-this.margin.right-this.tab;
+  for(i=0;i<this.margin.top;i++) lines.push([]);
+  this.forEach(function (item,index) {
+    label=self.type;
+    line = spaces (self.margin.left);
+    switch (label) {
+      case '*':
+      case '+':
+      case '-':
+        line += label+SP; break;
+      case ' ': break;
+      case '1': line += (index+1).toString()+'.'+SP; break;
+      case '2': line += (index+2).toString()+'.'+SP; break;
+      case '3': line += (index+3).toString()+'.'+SP; break;
+      case '4': line += (index+4).toString()+'.'+SP; break;
+      case '5': line += (index+5).toString()+'.'+SP; break;
+      case '6': line += (index+6).toString()+'.'+SP; break;
+      case '7': line += (index+7).toString()+'.'+SP; break;
+      case '8': line += (index+8).toString()+'.'+SP; break;
+      case '9': line += (index+9).toString()+'.'+SP; break;
+      case 'dl':
+        line += item.dt+NL; label=undefined; item=item.dd; break;
+      default:
+        break;
+    }
+    line += label?spaces(self.tab-label.length-1):spaces(self.tab);
+    if (item.length < textwidth) {
+      line += item;
+      lines.push(line);
+    } else {
+      tokens=item.split(SP); // TODO: preserve nbsp?
+      tokens.forEach(function (token) {
+        if ((line.length+token.length+1)<textwidth)
+          line += (token+SP);
+        else {
+          lines.push(line);
+          line = spaces(self.margin.left+self.tab)+token+SP;
+        }
+      });
+      lines.push(line);
+    }
+  });
+  for(i=0;i<this.margin.bottom;i++) lines.push([]);
+  return lines.join(NL);
+}
+
+
+module.exports = List;