eval input msgbox
The input function prompts the user for input and returns the user's response, as follows:
"a" is the title of the input field. "b" is the initial value of the input field. The cursor is positioned before the nth letter, if n is specified. In n is zero or not specified, the cursor is positioned at the end of the input field. After the user modifies the string in the input field, the result is put in "c".