C.10 Internal and External Borders
An Emacs frame has an internal border and an external border. The
internal border is an extra strip of the background color around the
text portion of the frame. Emacs itself draws the internal border.
The external border is added by the window manager outside the frame;
depending on the window manager you use, it may contain various boxes
you can click on to move or iconify the window.
- ‘-ib width’
- Specify width as the width of the internal border (between the text
and the main border), in pixels.
- ‘-bw width’
- Specify width as the width of the main border, in pixels.
When you specify the size of the frame, that does not count the
borders. The frame's position is measured from the outside edge of the
Use the ‘-ib n’ option to specify an internal border
n pixels wide. The default is 1. Use ‘-bw n’ to
specify the width of the external border (though the window manager may
not pay attention to what you specify). The default width of the
external border is 2.