[protege-discussion] ontology construction

[maha]

hello

I'm new in the domain of ontology and my project consists on building an ontology with protege but i don't know how can i be sure that there is no mistakes in my ontology
Can someone please tell me what can i do to display the tree of the concepts used in my ontology.

i'm using protégé 3.3.1 .
thank you in advance.

Maha
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