This is an experimental version of TTLINK, which has code added to transmit
a BREAK signal.  Since there's no real way to instruct TOPS-20 to send an
actual BREAK, TTLINK uses a sneaky trick to do this -- it sets the line speed
very low, sends a bunch of nulls, and restores the line speed.  This generally
produces the desired effect, but the results may vary from system to system,
and at different speeds.  Another complication is that TOPS-20 does not know
the actual speed of a line, so restoring the speed after setting it low is a
tricky business -- hence the addition of the /SPEED switch.  Thanks to Bill
Schilit of CUCCA for adding this code to TTLINK.  - Frank da Cruz, Oct 83
