xview

(#<widget> 'xview args)
This command is used to query and change the horizontal position of the text in the widget's window. It can take any of the following forms:
(#<widget> 'xview)
Returns a list containing two elements. Each element is a real fraction between 0 and 1; together they describe the horizontal span that is visible in the window. For example, if the first element is .2 and the second element is .6, 20% of the spinbox's text is off-screen to the left, the middle 40% is visible in the window, and 40% of the text is off-screen to the right. These are the same values passed to scrollbars via the -xscrollcommand option.
(#<widget> 'xview index)
Adjusts the view in the window so that the character given by index is displayed at the left edge of the window.
(#<widget> 'xview 'moveto fraction)
Adjusts the view in the window so that the character fraction of the way through the text appears at the left edge of the window. Fraction must be a fraction between 0 and 1.
(#<widget> 'xview 'scroll number what)
This command shifts the view in the window left or right according to number and what. Number must be an integer. What must be either units or pages or an abbreviation of one of these. If what is units, the view adjusts left or right by number average-width characters on the display; if it is pages then the view adjusts by number screenfuls. If number is negative then characters farther to the left become visible; if it is positive then characters farther to the right become visible.

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