I have noticed that with Piced V4 on the standard B&W C-Touch, much, much less can be done. I would guess that this may be related to the more elaborate firmware. I am basing the above on the fact that I am busy with programming a few B&W C-Touch Screens, and cannot do nearly as much as before. This has been verified as follows: An old project done with V 3.X which has ample spare memory, cannot be used on Piced 4, as the resource manager shows the memory to be exceeded. Similarly, the currently progressing projects cannot be done with Piced 4, but show ample spare memory with Piced 3.9.1. This merely as a caution to other programmers to be very careful with resources when programming a B&W Touch.