Related Clues:

• In hindsight, m’lud, it helps make web pages
• Address letters
• URL leader
• Letters followed by a colon
• Kind of tag for a Web designer
• Modern code letters
• Webmaster's file type
• Intro to a 37 Across
• Webmaster's code
• Millions of addresses start with it
• Start of a 55-Across address
• Abbr. after a period
• URL start
• Web prog. code
• Web programming language