Hello Ethan, Thanks for your response. So what s the meaning to add a fonctionality to remove a function that works well? So a short answers is : for security issue and to remove user error in automatic display process. Drag the toolbar do not remove the error possibilities. Long answer : I want to use gnuplot to plot some data on a « read only display ». The data are collected and a script is use to display these value to some user on a touch screen display. So the user could interact with the data...