We have just found with Hood that there is something that can be very useful which can be done in Screen4 but not in MachScreen. In Screen4 one can force leading zeros by using a formatting string something like this %04.0f. MachScreen on the other hand, doesn't output leading zeros with the same formatting string.
Also, using a formatting string like T%04.0f is allowed in Screen4 and and will output the T in front of the number. This is useful in some cases, like the one demonstrated by Hood, here:http://www.machsupport.com/forum/index.php/topic,17093.msg127574.html#msg127574
Please consider adding these capabilities to MachScreen.
Thank you for your efforts and a great software!