Contains the column number of the first column that is visible in the current window.
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.
This read only variable contains the height of the current buffer's window.
Contains the width of the current window. If the window is split vertically, setting this variable will change the width of the window.
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.