What does exemplary mean?

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From our dictionary:

ex•em•pla•ry

Pronunciation: (ig-zem'plu-rE, eg'zum-pler"E), [key]
adj.
1. worthy of imitation; commendable: exemplary conduct.
2. serving as a warning: an exemplary penalty.
3. serving as an illustration or specimen; illustrative; typical: The sentences read are exemplary of the style of the essay as a whole.
4. serving as a model or pattern: The authoritative and exemplary text of the work is in the Bodleian Library at Oxford University.
5. of, pertaining to, or composed of exempla: the exemplary literature of the medieval period.