Behavior of close button and X

1. Why is the Close button an X?
2. What is the X to close a window called?
3. Are the close button and X on a popup redundant?
4. Where is the X close button located?

Why is the Close button an X?

X was commonly used to delete characters in-line, but not to close the program. [x] is a true icon, not representing a letter but representing an action, and only adopted to represent 'close' well after the development of graphics-oriented operating systems.

What is the X to close a window called?

(eXit button) Also called a "close" or "exit" button, clicking or tapping the X removes the current window, dialog box or popup message from the screen. It is also used to delete text and graphics. Exit Button - Windows vs.

Are the close button and X on a popup redundant?

Yes, they're redundant.

Where is the X close button located?

For example, in most operating systems and software programs, the close button (denoted by an "X") is located in the top-right corner of the window.