1) {$email_text_store_name}- To display the store name .
2) {$email_text_separator}- To add the email text separator
3) {$email_text_order_number}- To display the order number.
4) {$email_text_invoice_url}- To display the invoice url.
5) {$email_text_date_ordered}-To display the ordered date.
6) {$email_text_tracking} – To display the tracking text, if present.
7) {$email_text_status_update}- To display the text about order status update