application/pdf          pdf string(0,%PDF)
application/postscript   ai eps ps string(0,%!) string(0,<04>%!) \
                        contains(0,128,<1B>%-12345X) + \
                        (contains(0,4096,"LANGUAGE=POSTSCRIPT") \
                        contains(0,4096,"LANGUAGE = Postscript") \
                        contains(0,4096,"LANGUAGE = PostScript") \
                        contains(0,4096,"LANGUAGE = POSTSCRIPT") \
                        (contains(0,4096,<0a>%!) + \
                        !contains(0,4096,"ENTER LANGUAGE")))
application/x-dvi        dvi string(0,<F702>)
application/mozilla-ps   ps (string(0,%!) + \
                        contains(30,200,"Creator: Mozilla PostScript"))
application/netscape-ps  ps (string(0,%!) + \
                        contains(30,200,"Creator: Mozilla (NetScape)"))