If the -pmllib option is used the from_path and to_path arguments are taken to be names or paths of folders (which must not include embedded spaces, although files and sub-folders within them may. See above for wide-character filenames). All folders beneath the from_path folder are scanned, and files with extensions .pmlfnc, .pmlobj, .pmlfrm or .pmlmac are encrypted to a matching structure constructed or overwritten beneath the to_path folder.