Usage:

PORT/A,DELAYTICKS/N

PORT/A       is the name of the message port to wait for. This argument must be
             provided. If the name includes spaces you need to enclose it with "".
             Consider that Amiga-OS port names are case sensitive !

DELAYTICKS/N is the delay time between the single FindPort() calls. The value
             given must be the number of 1/50 seconds (=1 tick).
             Defaults to 0 (behaviour of the original WaitForPort command).
             25 is probably a good value here.

Example:

 NewWait4Port MIAMI.1 10     ; waits for MIAMI.1 port to appear. It checks its
                               availability every 10/50 second (=200 milli seconds).

If you start NewWait4Port without any arguments Amiga-DOS will show you the template
and ask you for input. If you input a ? now you will get a more detailed explanation
of the arguments.

You can cancel NewWait4Port by sending a CTRL_C break. This can be done by pressing
<Ctrl><c> or by the following commandline:

 break `status COM=newwait4port` C

Note that it can take up to DELAYTICKS time for the program to quit as the program
cannot quit within a Delay() call.