Misc: "Do unto others as you would have others do unto you" is also called what?

Questions

Which city is served by Schwekat airport?

The opera Falstaff was written by whom?

Green Bay Packers won their first Superbowl, Barbra Streisand played to 135,000 people in Central Park?

In medicine, of what is oncology the study'?

What is meant in computing terminology by the acronym WYSIWYG?