         replace("<", "&lt;")
         replace(">", "&gt;")
         replace("  ", "&nbsp; ")
-        
-        return mutable
+
+        return mutable as NSString as! String
     }
     
     func print(color: PrintColor, _ str: String) {

}

func limit(str: String, maxLength: Int, continuation: String = "...") -> String {
    if countElements(str) <= maxLength {
        return str
    }
    

    }
    
    var description: String {
        return NSString(format: "0x%0*llx", sizeof(address.dynamicType) * 2, address) as! String
    }

    func symbolInfo() -> Dl_info? {
