RWS@ZERMATT.LCS.MIT.EDU (Robert Scheifler) (10/28/87)
I have recently been asked by a couple of companies whether the correct form of address is "X11" or "X.11". My response is that I like "X Window System" and "X" (and I don't particularly like "X Windows"), and I like "X Version 11", but if you want to get both "X" and "11" into the same word, I like "X11". "X Window System" is a trademark of MIT.