The X
按字母分类：
extension name file type Classification
P7S Digitally Signed Email Message text file
PAGES Pages Document text file
PAGES-TEF Pages iCloud Document text file
PDPCMD Pdplayer Command File text file
PFX First Choice Word Processing Document text file
PLAIN Plain Text File text file
PLANTUML PlantUML File text file
PMO Pegasus Saved Message File text file
PRT Crypt Edit Protected Text Format File text file
PRT Printer Output File text file
PSW Pocket Word Document text file
PU PlantUML File text file
PVJ ProofVision Job Ticket text file
PVM Photo Video Manifest File text file
PWD Pocket Word Document text file
PWDP Password Pad Document text file
PWDPL Password Pad Lite Document text file
PWI Pocket Word Document text file
PWR PowerWrite Document text file