emacs - Resizing root window of a frame to 80 characters -

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I am trying to find an order that can resize the current frame "only one window is open" 80 Let the letter be wide

I'm not trying to big or reduce the buffer, but rather instead just open the current buffer to fit into 80 character lines.

Explain the work that works with the frame size in the following link for the AMACS document related to the frame Includes:

The height and width can be set in the swoop by using a set-frame-size Can be determined by using pixels or using the height and width of functions such as set-frame-height and set-frame-width Can be set differently.


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