[Tutor] bnf

[Alan Gauld]

> ::= is bnf notation for "is defined as"
>
> please spend that extra minute googling before
> you bother all the nice people on this list.

To be fair, unless you knew that it was BNF I doubt you'd find much by 
Googling.

I tried several variations of '::=' etc and Google came back empty.

Once you know than you are kooking at BNF then Googling for BNF broings
back loads of stuff but its not obvious if you don't already know...

Alan G.