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%hash = ( FOO() => 'FOO description, ...)
perl -MO=Deparse -e "use constant FOO => 5; print FOO,qq{\n};" perl -MO=Deparse -e "use constant FOO => 5; print &FOO,qq{\n};" perl -MO=Deparse -e "use constant FOO => 5; print FOO(),qq{\n};"