psql : Comment?

I tend to put SQL into text files and then let a makefile run them through
psql. I'd like to be able to put comments into these SQL files. Is there a
character psql accepts as a comment?

Example (create.sql) ...


# Patient Records are really cool.

CREATE TABLE patient
(
    id     integer unqiue not null,     # A nifty column, eh?
);


Example (makefile) ...

create    :
    psql -f create.sql

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