An Applet-based Approach using the SurfIt Tcl/Tk Browser

• SurfIt is an HTTP/HTML browser, which supports Tcl/Tk applets (compare Netscape, which supports Java applets).
• It uses the HTML 3.0 feature which allows the SCRIPT attribute of the FORM tag to associate a client-side script with a fill-out form.
• No extensions to HTML are required, due to the availability of Tk for managing the form.
• The environment in which Tcl applets are executed includes:
  • evaluation in a safe slave interpreter, with an isolated namespace protecting the browser and other applets from interference.
  • access to windowing functions via Safe-Tk, with a top level window automatically created for the applet.
  • access to the browser window in which the applet was loaded.