.MARS File Extension

File created by Adobe Acrobat, a program used to create and edit PDFs; contains the XML-friendly representation of a .PDF document; used for storing PDF documents in a more open and accessible format.

MARS documents can be generated using the Mars Project PDFXML plug-in for Adobe Acrobat, which is available from the Adobe Labs website.

NOTE: The MARS file format developed by the Adobe Labs Mars Project is referred to as PDFXML.