The 1995 Frameset proposal from Netscape that started it all: https://lists.w3.org/Archives/Public/www-html/1995Sep/0034.html https://lists.w3.org/Archives/Publ

The 1995 Frameset proposal from Netscape that started it all: https://lists.w3.org/Archives/Public/www-html/1995Sep/0034.html https://lists.w3.org/Archives/Public/www-html/1995Sep/0034.h... > Hi. I'm the Netscape Navigator marketing guy. Please forgive the temerity with which we submit this new proposal from Netscape to the W3 and IETF for enhancements to HTML 3.0. It pertains to functionality called Frames. ... > The NAME attribute is used to assign a name to a frame so it can be targeted by links in other documents (These are usually from other frames in the same document.) The NAME attribute is optional; by default all windows are unnamed. > Names must begin with an alphanumeric character. However, several reserved names have been defined, which start with an underscore. These are currently: _blank Always load this link into a new, unnamed window. _self Always load this link over yourself. _parent Always load this link over your parent. (becomes self if you have no parent). _top Always load this link at the top level. (becomes self if you are at the top).