Some languages use a nominal affix to indicate the specificity of a noun.  In Egyptian Arabic, <i><b>Ê”iá¹­</b>-á¹­ajjaar-a gaaja</i> '<b>the</b>-plane-F.SG come' means "the plane is coming."  This property does not include clitics, which are categorized as definite words, i.e. definite articles.

<br><br><b>Reference</b><br>
Dryer, Matthew S.. 2008. Definite Articles.
In Haspelmath et al (2008), chapter 37.
Available online at <a href="http://wals.info/feature/37">
http://wals.info/feature/37</a href>.

