There are a half dozen companies competing in the WebPostServices sector for Mortgage Notary programs. These programs allow Windows pcl (printer command language) files to be transmitted electronically over the internet rather than being printed and FedEx'd. This allows lenders to create documents using Windows software to print to pcl and also saves the expense of purchasing Acrobat Creator licenses for each desktop, and also ensures that there are no format changes as might happen when trying to convert from pcl to pdf.(Proofreading for format changes would negate the cost savings of electronic transmission versus courier service)
The pcl files are then posted on the webpage requiring a username/password to retrieve the file, which is more secure than emailing the pcl file.
To improve security further, the pcl file is usually zipped and encrypted. Each company then provides its own print utility program, sometimes as an active-x plugin, none of which targets linux. Instead of having a single standard ps/pdf file, we now have a have dozen or more proprietary file formats.
elynx provides a print utility program which unzips/unencrypts/views/prints
its .elx files (encrypted zip archives of windows pcl files)
These executables allow one to print .elx files which are nothing more than
password protected zip archives containing a windows pcl print file. If I knew
the password I could unzip the .elx to .pcl and then simply print
using either ghostpcl or printing as a raw pcl file with my printer which understands both postscript and pcl. The company will not provide the password to unencrypt its .elx zip archives. Instead it provides its own print utility which has the password encoded in the .exe utility.