interactively reads in one Mathematica expression.
requests input, displaying prompt as a "prompt".
in a notebook front end uses init as the initial contents of the input field.
- Input returns the expression it reads.
- The operation of Input may vary from one computer system to another. When a Mathematica front end is used, Input typically works through a dialog box.
- When no front end is used, Input reads from standard input.
- If the standard input is a file, then Input returns EndOfFile if you try to read past the end of the file.
- On systems with textual input, Input uses as a prompt.
- When Input is evaluated, Mathematica stops until the input has been read.
- With a notebook front end, Input by default puts up a dialog window with a standard appearance.
- The prompt given can be text, graphics or any expression.
- Input takes notebook options. The default settings include WindowFloating->False, WindowSize->All and WindowTitle->None.
- Input by default puts up a dialog in the middle of the main display screen. Explicit settings for WindowMargins override this.
- The option FieldSize can be used to specify the size of the field used for input.
- Input[prompt] is equivalent to Input[prompt, ""].
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