-\(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
-RIGHT is one more than the rightmost column occupied by WINDOW,
-and BOTTOM is one more than the bottommost row occupied by WINDOW.
-The edges include the space used by the window's scroll bar,
-display margins, fringes, header line, and mode line, if it has them.
-To get the edges of the actual text area, use `window-inside-edges'. */)
+The list has the form (LEFT TOP RIGHT BOTTOM).
+TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns,
+all relative to 0, 0 at top left corner of frame.
+
+RIGHT is one more than the rightmost column occupied by WINDOW.
+BOTTOM is one more than the bottommost row occupied by WINDOW.
+The edges include the space used by WINDOW's scroll bar, display
+margins, fringes, header line, and/or mode line. For the edges of
+just the text area, use `window-inside-edges'. */)