ZMODEM is released

On October 14, 1988, Chuck Forsberg releases the ZMODEM specification. Zmodem is a file transfer protocol that superscedes both XMODEM and Forsberg's own YMODEM (see http://timeline.textfiles.com/1988/10/14/1/FILES/zmodem.txt). 

The YMODEM protocol specification, which was introduced in 1985, was documented and re-released on this day as well (see http://timeline.textfiles.com/1988/10/14/1/FILES/ymodem.txt).