comment out unused lines in hcmask file

[matt99]

How can i comment out unused areas/lines in hcmask file? Like you could do in most programming languages.

Lets assume i have this small hcmask file:

Code:

?l?l?l?l
?l?l?l?l?d?d
?l?l?l?l?d?d?d?d
?u?l?l?l?s

Now i don't want to use the last line

Code:

?l?l?l?l
?l?l?l?l?d?d
?l?l?l?l?d?d?d?d
#?u?l?l?l?s

Of course this will not work: "Invalid mask." But how can i achieve this without writing a new hcmask file and delete unnecessary lines?