window-first-column

Contains the column number of the first column that is visible in the current window.

window-graphic-rendition «

If syntax-colouring is false all characters are displayed in the window-graphic-rendition. Otherwise all dull characters are displayed in the window-graphic-rendition colour.

window-size

This read only variable contains the height of the current buffer's window.

window-width

Contains the width of the current window. If the window is split vertically, setting this variable will change the width of the window.

wrap-long-lines « 0

Controls the way Emacs displays long lines. If non-zero, Emacs will display long lines by wrapping their continuation onto the next line. If set to zero, long lines are truncated at the right-hand edge of the screen and a $ is displayed to indicate that truncation has occurred.