-'before-modes - add to the beginning of `mode-line-modes',
-'after-modes - add to the end of `mode-line-modes',
-t - add to the end of `global-mode-string',
-nil - don't add to mode line."
+`before-modes' - add to the beginning of `mode-line-modes',
+`after-modes' - add to the end of `mode-line-modes',
+t - add to the end of `global-mode-string',
+nil - don't add to mode line."