http://www.comtecis.com/cameo.htm
Comtec 'whatis' utility. To use the utility, simply run it and pass the name of the PCX file you want it to check. If the file has a Comtec header on it the utility will report that and prompt you to strip it off or exit; if there is no header, it will prompt to add one or exit. A file with a header can be sent as a raw file to the printer and will create the enclosed graphic as a flash file.