Webdings are just another form of wingding. The term “wingding” has a long history in typography, referring to characters that aren’t letters, numbers, or punctuation marks. They can be used for bullets, borders (putting three webdings on a line to separate two articles, for instance) and general design work. Webdings were probably names as “web wingdings.”
Sorry guys, didn’t see the other thread. 
And no, of course the 72 doesn’t matter. Just for easy readin’.
HA 
Perfect.