diff --git a/pushover.el b/pushover.el
index 1c991ed27179ee9eafcd6d5ee96184bca1a8f9b7..a885e52e260e07234e96bd412fe721515a7229d6 100644
--- a/pushover.el
+++ b/pushover.el
@@ -1,9 +1,36 @@
+;;; pushover.el --- Pushover API Access
+
+;; Copyright (C) 2016 Samuel Flint
+
+;; Author: Samuel W. Flint <swflint@flintfam.org>
+;; Version: 1.0
+;; Package-Requires: ((cl-lib "0.5"))
+;; Keywords: notifications
+;; URL: http://github.com/swflint/pushover.el
+
+;;; Commentary:
+;; 
+;; This library provides a single function, pushover-send, which is
+;; used to send notifications using the pushover service.
+
+;;; Code:
 
 (defconst *pushover-api-key* "agd6sapvp5xcdmbuo1qdpc7mddscri")
 
 (defvar *pushover-user-key* nil)
 
-(cl-defun pushover-send (title message &optional (html nil) (priority 0))
+(cl-defun pushover-send (title message &key url url-title sound (html t) (priority 0) retry expire)
+  "TITLE MESSAGE &KEY URL URL-TITLE SOUND HTML PRIORITY RETRY EXPIRE
+
+TITLE is the message title.
+MESSAGE is the message itself.
+URL is a URL to be shown.
+URL-TITLE is the title of the given URL.
+SOUND is the sound to be used.
+HTML, default t, signals to Pushover that the message is in HTML.
+PRIORITY is an integer from -2 to 2, with 0 (mid-priority) being the default.
+RETRY is the number of seconds between retries for emergency (2) priority.
+EXPIRE is number of seconds before an emergency priority message expires."
   (let ((url-request-method "POST")
         (url-request-data (concat (format "token=%s&user=%s&title=%s&message=%s&priority=%s&timestamp=%s"
                                           *pushover-api-key*
@@ -14,7 +41,24 @@
                                           (current-time))
                                   (if html
                                       "&html=1"
+                                    "")
+                                  (if url
+                                      (format "&url=%s" (url-encode-url url))
+                                    "")
+                                  (if url-title
+                                      (format "&url_title=%s" (url-encode-url url-title))
+                                    "")
+                                  (if sound
+                                      (format "&sound=%s" sound)
+                                    "")
+                                  (if retry
+                                      (format "&retry=%s" retry)
+                                    "")
+                                  (if expire
+                                      (format "&expire=%s" expire)
                                     ""))))
     (url-retrieve "https://api.pushover.net/1/messages.json" (lambda (status) (kill-buffer (current-buffer)) t))))
 
 (provide 'pushover)
+
+;;; pushover.el ends here