Yes, that is fine. The problems come in when you want to strip some of the leading whitespace:

    print unindent( <<"    END" );
        Usage: $0 [flags] [args]
        Gropples the snarflog.
          -v       Verbose.
          -t mode  Mode of groppling to use.  "mode" can be:
                   fast  Minimize execution time.
                   hard  Maximize decryption time.
                   wide  Minimize alphabet size.
        Do not use on UTF8 files.
    END
[download]

Any attempt to write an unindent() for the above will run into problems in the face of 1) editors that insert tabs when maintenance work modifies the text, and 2) people who don't agree on how far apart tabstops should be set.

The only solution I've found that I like goes something like this:

sub unindent { s/^\s*\S//gm }

    print unindent( <<"    END" );
        .Usage: $0 [flags] [args]
        .Gropples the snarflog.
        .  -v       Verbose.
        .  -t mode  Mode of groppling to use.  "mode" can be:
        .           fast  Minimize execution time.
        .           hard  Maximize decryption time.
        .           wide  Minimize alphabet size.
        .Do not use on UTF8 files.
    END
[download]

        - tye (but my friends call me "Tye")

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