Custom rules

[Dan Massey]

Hi List

I have a file of custom rules for spamassassin, but some of the rules have
lots of OR conditions and I would like, for the sake of readability to break
it over several lines in the file, for example

header  MYTEST From =~ /(
    [EMAIL PROTECTED]|
    [EMAIL PROTECTED]|
    [EMAIL PROTECTED]|
    )/i

This obviously does not work in its current format, is there a 'continuation
line' character I can use?

Thanks in advance.

Dan