Iframe Tag just adds another window on your Webpage and due to which whenever a browser loads a page with an iframe it loads the original Page and Iframe as a separate 2 different pages. So in some cases Iframe is not-supported and thus, displays an Error.
Sigma is a Greek letter that corresponds somewhat to our letter S and thus sigma is often used to stand for some concept that starts with S. There is an upper case (capital) sigma and a lower case (small) sigma. They are and. is most ofter used to indicate a sum.
Kappa Sigma is the largest college social fraternity in the world with more than 200,000 living members, including over 20,000 undergraduates and 320 chapters and colonies located throughout the United States and Canada. Founded in 1869 at the University of Virginia, Kappa Sigma International Headquarters is based in Charlottesville, Virginia.