You could do it quite easily in Java like this: int addition = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10; But you wouldn't really want to use that method if you needed to add up the numbers 1 to a 1000. Instead, you can use a loop to go over a line of code repeatedly until you've reached 1000.
A text box in a text processing program. A text box, text field or text entry box is a graphical control element intended to enable the user to input text information to be used by the program.
Square symbols. Box signs are symbols which are usually used to make pseudographics. All people who has a bit more experience of using computer should have seen them on all that old DOS programs simulating graphic interface. Some of them are also used by me in my text generators.