Effective Tcl/Tk Programming
EXAMPLE: Active Web Content
With Tcl/Tk, it's easy to create active content for the web. You simply create a Tcl/Tk application, and then embed a reference to it in a web page. As long as your customers have the Tcl/Tk Plug-in for Netscape Navigator or Microsoft Internet Explorer, they can run your application right in the web page.

For example, here is the Electric Secretary application described in our book:

You can dial up any date on the calendar, and then add appointments to the "Appointments" area. These appointments are stored in a file on our web server, so you can exit the page and recall the appointments again later. (We delete the appointments every night, to reduce disk usage!)