Apssman Library Use

[math7]

The problem still persists. I did have the Keysman library installed, and also Mr. Wolfang's EQL +, and when I see the library numbers I realize that this APPsman library has the number 1791, that number also had another help library that does not appear the name, I think that HLP 1791 from 2000 is helpful but I uninstalled it, I also removed keyman and HPLibman as well and nothing. I'm going to uninstall all the libraries to see which one may be bothering. I have others like Tim Wessman's PEQUM, but I don't understand what it can be. The doubt I have is that the manual says that the APAR variable is reserved, but it does not exist in the factory calculator because I am creating it when I save it a list like {11 4 2}, I do not understand how the calculator is going to read that there is a created variable called APAR and simply make that when pressing the APPS key that variable is called, in the same way it could create 10 different variables with different names and when pressing APPS those variables will not be called, what is it? what makes the APPS key call the APAR variable and read its contents and then customize accordingly? In some way they have to be related, such as that on the user keyboard one has stored a key that when touched in user mode calls the contents of the APAR variable, but that is not done in the manual.