You will need a font that allows you to distinguish between Arabic and Hebrew.
ltr context, rtl p
Test passes if:
A. The visual order of words is Hebrew (הישראלי), English (W3C), Arabic (مكتب)
B. The text is right-aligned.
مكتب W3C הישראלי
Assertion: When dir="rtl" is added to a paragraph in a ltr context, (a) directional runs in a paragraph are ordered right-to-left, (b) the paragraph is right-aligned on the page.
The order of directional runs in memory is: Arabic (مكتب) English (W3C) Hebrew (הישראלי).
= means you should check that the test and reference graphic look the same, except for font differences and cursive joining behavior. If they are different, use the addition instructional text to check for differences that are significant to the test.