Send SMS

        sb.append("<h1>Send SMS</h1>");

        sb.append("Sends a SMS Message via the SMSCentral API.<br>");

        sb.append(

                "You must have an existing SMSCentral API account and know the associated Username and Password<br><br>");

        sb.append("<h2>Username</h2>");

        sb.append("The SMS Central Username.<br><br>");

        sb.append("<h2>Password</h2>");

        sb.append("The SMS Central Password.<br><br>");

        sb.append("<h2>Recipient</h2>");

        sb.append(

                "The Mobile (Cell) phone number of the intended recipient. This may contain an actual phone number but normally it will contain a field reference such as ${phone_mobile}. Where phone_mobile is a Campaign Template field which would contain a mobile phone no.<br><br>");

        sb.append("<h2>CLID</h2>");

        sb.append(

                "The phone number that you want to present as the sender. This is the no. that you want your customer to use when they call back.<br><br>");

        sb.append("<h2>Message</h2>");

        sb.append(

                "The text body of the SMS Message. This may contain any text as well as encoded Route variables e.g. ${first_name} .<br><br>");

        sb.append(

                "Note the Message may be greater than 160 characters, but you will be charged for 1 SMS message for each 160 characters or part there of. e.g. if you message is 161 characters you will be charged as if you had sent two SMS messages.<br><br>");

        sb.append("<h2>Don't Encode Message (Advanced Option)</h2>");

        sb.append("You should NOT enable this option unless you know what URL encoding is.<br><br>");

        sb.append("Normally the message MUST be encoded in order to be passed to SMS Central.<br><br>");

        sb.append(

                "In RARE cases you may need to pass an already encoded message, in this case you need to check the Don't Encode Message field to stop the message from being double encoded.");