What does the suffix …SHTML”?

-> I OFTEN FIND ADRESSES ENDING IN “…shtml”. WHAT IS IT AND WHAT’S THE DIFFERENCE WITH HTML?

SHTML (Server Parsed Hypertext Markup Language) is the development of “HTML” both are web language used to write, text, links, graphics, and more. That facilitate programming, so that the contents of the same page such as navigation menus could be placed in central data.

reference:
computer easy 02.2004