ht://Dig Copyright © 1995-2002 The ht://Dig Group
Please see the file COPYING for license information.
As any HTML author knows, information is only useful if it is valid. Unfortunately, a lot of information has an inherent expiration date. Things like meeting schedules, announcements of upcoming events, and pages with those annoying yellow 'NEW' images by certain links.
ht://Dig is a WWW index/search system developed at San Diego State University. Since this index system already scans all HTML documents, it was the logical choice to incorporate a reminder service into it.
ht://Dig can be told to remind you about an HTML page sometime in the future. The reminder/notification will come by email and will contain the URL to the page plus some other information. If multiple URLs have the same notification, one message will be sent with for all URLs combined.
ht://Dig detects special use of the <META> tag in HTML documents. The <META> tags should go between <HEAD> and </HEAD> of an HTML document.
<META NAME="htdig-email" CONTENT="firstname.lastname@example.org">
<META NAME="htdig-email-subject" CONTENT="Reminder to update a page">
<META NAME="htdig-notification-date" CONTENT="8/28/1995">
Body of document</BODY>
After 8/28/1995 email@example.com will get a mail message which will look something like the following. (Note that much of this can be modified with the configuration file attributes for htnotify, such as htnotify_prefix_file, htnotify_replyto, htnotify_sender, htnotify_suffix_file, and htnotify_webmaster.)
From: ht://Dig email notification service
Subject: WWW notification: Reminder to update a page
The following page was tagged to notify you after 8/28/1995.
Subject: Reminder to update a page
The special ht://Dig <META> tag attributes related to notification are:
Descriptions of the values for the attributes:
There are a couple of other META attributes which are recognized. These can be found in the more general ht://Dig META tag documentation.
This service is a free service for all HTML maintainers whose documents are covered by the ht://Dig search system. If any of the attributes are improperly formatted, no notifications will be mailed. Email notification may not always occur on the date that you specified. We can only guarantee a notification of at most once a week.