the_blue_jester

Han, Thanks for the response. I appreciate the time you take with this excellent program. Paul

I've answered my first question - yes. I can see the diagrams at the top of the columns show each square on the 3x3 grid

Sorry if this is a silly question... I am using the stack -> inspector to check where tilt may be in my system. I am using a script in SkyX to automate this and it is successful. For the actal anlysis I appreciate it is divided into a 3 x 3 grid and then areas refernced as "1,1" etc. I know the text explains where 1,1 2,2 and 3,3 are but that doesn't help as it could be column, row OR row, column. I assume as with standard plotting it's row, column (ie x,y) but could you confirm? Also, as a related...