Here is the demo of my program (CATGRAPH) in its current form. Button presses should be self explanatory. The red/yellow letters on menus/prompts are the button you press to do that function. Prompts that ask for Yes or No require you to press Y or N. Sometimes it says press Enter to continue, other times Esc to cancel. Windows with input fields need to be filled first, then Enter confirms. TAB swaps between multiple input fields. F1 displays the list of .CGP files in the program directory. 😁