说明：  no intro
(A software is very rough, the first to write the interface! Functional deficiencies exist, not with a small keyboard to operate the figures because it was used in notebook testing, even if the use of small keypad code to write, nor do I know can use to run their overall are the main keys on the keyboard! esc: escape backspace: Backspace home: Clear the arrow keys to choose a small space program inadequacies are willing to exchange correction,)