ميدياويكي:Gadget-BiDiEditing.js

// v. 1 "Directional editing control script (authors Brion and Splarka).‎"
// v. 2 [[:he:ויקיפדיה:סקריפטים/52]] modified {{oldid|9466464}} 

if ($.inArray(mw.config.get('wgAction'), ['edit', 'submit']) + 1)
$(function() {
        $.each([
                {l: 'يمين', d: {direction: 'rtl'}}, 
                {l: 'يسار', d: {direction: 'ltr'}}, 
                {l: 'عادي', d: {unicodeBidi: 'normal'}}, 
                {l: 'معكوس', d: {unicodeBidi: 'bidi-override'}} 
                ], 
                function(index, item) {
                        $('#editform').before(
                                $('<input>', {type: 'button', value: item.l})
                                .click(function() {
                                        $("#wpTextbox1, .ace_editor, #wpSummary").css(item.d);
                                })
                        );
                });
});