offset [hex] <- Setting the offset where to start from rewriting 
[the data comes here in hex like this "ff 42 7b 00"]
end <- you need this to tell the program that a new offset can start
 <- be sure to press enter/new line when you end the script

example program:

offset f23
00 ff ac 8b 96
end
offset ff5
00 00 00
end