messing up how lines and paragraphs are displayed, the function
@code{bidi-string-mark-left-to-right} has been removed; so have many
other functions and variables related to bidirectional display.
-Unicode directionality characters like @code{U+200E} ("left-to-right
-mark") have no special effect on display.
+Unicode directionality characters like @code{U+200E} LEFT-TO-RIGHT
+MARK have no special effect on display.
@item
Emacs windows now have most of their internal state hidden from Lisp.