I've been using my calculator to graph a few functions. When I go the plot function menu and add a new function at this point [Y7(X)=] will appear. If I press [Choos] I will be able to select previous functions that I have entered and graphed. I want to erase these functions, so that when I enter a new function it will be at [Y1(X)=] I don't want to have to hard reset either as it takes some time to set up the computer back to my specifications, with flags and all. Pressing [Erase] at the plot - function menu has no effect. Pressing [DEL] will remove the function, but it is still in the calculator memory as I can recall it with [Choos] I want them wiped clean so I can start from [Y1(X)=] How can I do this ?