HI, maybe you want to change a value of an image or there has been an update changing only a single command: Here is a HELP SCREEN to make that as easy as possible. I suppose you all have a pdf reader, if not I recommend the Foxit Reader it is better then Adobe and free. ; You can use a printout or open it on your desktop. All values have a line - RP2 or IP2 for instance and a letter to identify. Example: RP2A means the sequence of the formulas used A[12345] RP3A means the Newton Vaiable A[123] In the brackets you can see how many digits are used. Is that clear enough? Questions are welcome, of course. ; I will also supply a list of all used commands and variables showing the name and where to modify it. ; https://www.dropbox.com/s/2hmzem59rxxlcfj/input.pdf ; Albrecht