C56(9.1) C56(9.1) NAME c56 - terminal program with data compression SYNOPSIS c56 DESCRIPTION C56 replaces the program in the layer on its standard output with an emulator for a Teletype DMD 5620 stand-alone termi- nal. In the resulting layer, environment variable TERM is set appropriately. The character stream from the host to the terminal is compressed using an adaptive algorithm that often doubles the effective data rate of a slow host- terminal connection. This terminal program is most useful at speeds of 2400 baud and below. At 9600 baud, the terminal cannot generate char- acters and put them on the screen fast enough to keep up, and the extra overhead introduced by decompression just slows things down. BUGS Unexported shell parameters and functions are lost. Race conditions occasionally leave the tty modes set improp- erly at start-up.