Directionality of text

Hello in Hebrew left-to-right (wrong): שלום
Hello in Hebrew right-to-left (correct): םולש
Zero to nine with left-to-right marker: ‪0123456789‬
Zero to nine with right-to-left marker: ‫0123456789‬
Zero to nine with left-to-right DIR attribute: 0123456789
Zero to nine with right-to-left DIR attribute: 0123456789

Internationalization
O'Reilly Apache Conference, 24 August 1999
Andreas König (on CPAN: ANDK)
<andreas.koenig@anima.de>