Rox.7z -

: It is typically part of a UUENCODE or Base64 data stream.

: Often denotes a specific catalog sub-number or printing variety. Rox.7z

You will need a tool like 7-Zip or The Unarchiver to open it and see the contents. : It is typically part of a UUENCODE or Base64 data stream

The string "ROX.\7Z" (and similar variants) appears in the raw ASCII text of SEC EDGAR filings . Rox.7z

If you are looking for a specific document, could you clarify or what topic the "paper" is supposed to cover? 0001292814-16-006275.txt - SEC.gov

: The .7z suffix suggests a 7-Zip compressed archive .

⚓ : There is no commercial printing paper brand named "Rox.7z." It is almost certainly a file extension for a compressed document or a catalog code from a stamp collecting reference.