What GUI metaphor did this program introduce that we cannot live without?

Clue:

Cracked by Goyal , nikhil , username , Priya , varuns88 , sne , shashank , jayanth , Ananta , Rahulk and Siddharth Jain.

MS Publisher introduced the concept of wizards.

Goyal, nikhil, username, Priya, varuns88, sne, shashank, jayanth, Ananta, Rahulk and Siddharth Jain