The journal Science has two sections for submission, Research articles and Commentary. http://www.sciencemag.org/site/feature/contribinfo/prep/gen_info.xhtml
Under commentary, there is a section for 'Policy Forum'. Unlike 'Education Forum' there is nothing explicit about research related to Policy. If one submits (not invited) a manuscript to Policy Forum, is this considered peer reviewed publication? Is there a difference in citation both in format of a citation and if it is common to cite a manuscript published in Commentary?