On Tue, 7 Jan 2020, Clem Cole wrote:

> Algol-W   From, the Sites book, (Page 10, Section 1 'Terminology)  [Dave,
> I'll send you the PDF offline]. 

For the record, it was received OK; thanks!

>             The symbol comment followed by any sequence of
>             characters not -containing semicolons, followed by a
>             semicolon, is called a comment. A comment has no
>             effect on the meaning of a program, and is ignored
>             during execution of the program. 

For the benefit of the OP, here is no mention of "#" being a comment in 
ALGOL(W).

-- Dave