Using '#' at the beginning of a format?

loris has asked for the wisdom of the Perl Monks concerning the following question:

Hi,

I would like to use 'format' to print out some stuff. However, in the top format, I would like to use '#' at the beginning of the lines, e.g.

#     Name    Price
#     ----    -----
     large    90.12
     small    12.34
    medium    57.78
[download]

As you may imagine, googling for 'perl format hash' or similar isn't much fun. Anyone know the answer?

Thanks,