4KXMODEM.1    THE 4K XMODEM EXTENSION REFERENCE 
MODEM7_D.1    THE TOPS-20 IMPLEMENTATION OF THE MODEM7 PROTOCOL 
UUCP_PRO.1    UUCP Protocol Information 
XMODEM_C.1    Calculating the XMODEM CRC 
XMODEMBA.1    Batch protocol for MODEM7 and XMODEM multi-file transf 
XPKTPROT.1    XPACKET PROTOCOL 
YMODEM8_.1    XMODEM/YMODEM PROTOCOL REFERENCE 
ZMODEM8_.1    The ZMODEM Inter Application File Transfer Protocol