Case markers often distinguish between the various arguments of a predicate, such as the Agent and Patient. Three basic types of arguments are generally distinguished: the subject of a transitive clause, the object of a transitive clause, and the subject of an intransitive clause. 

<br><br>Many languages show case markings on full NPs not with affixes, but with adpositional clitics.  Postpositional clitics, which attach to the last word of the NP in question, are the most common form and can be seen in this example from Ungarinjin:

<br><br><i>[dambun budaga]=rÌ£a</i> '[camp their]=LOC' for "at their camp"

<br><br>Case markings may also take the form of prepositional clitics, which attach to the first word of the NP, or inpositional clitics, which appear  inside the NP.

<br><br><b>Reference</b><br>
Dryer, Matthew S.. 2008. Position of Case Affixes.
In Haspelmath et al (2008), chapter 51. Available online at <a href="http://wals.info/feature/51">
http://wals.info/feature/51</a href>.
