(09-17-1995 10:24am DIAL.EXE)
Modem defaults to COM1, but can be overridden through the
environment variable MODEM. For example, if your modem is
accessed through COM2, adding the line: SET MODEM=COM2:
will cause DIAL to use COM2.
If Phone_Number is not provided, the screen is searched
for a number, and the arrow keys may to used to move from
number to number on the screen.