What is connect by and level pseudo column? how it works?

what is connect by and level pseudo column? how it works?
Please explain this concept by giving an example..
Thanks
Prashant

Read the following documents with examples :
http://psoug.org/reference/connectby.html
http://www.sqlsnippets.com/en/topic-11821.html
http://docs.oracle.com/cd/B19306_01/server.102/b14200/queries003.htm

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Using LEVEL Pseudo column to format repeating frame

I am trying to display a hierarchy in Reports. I use the 'Connect By' Clause in SQL and gather the hierarchical data, and want to display the results in a tree fashion. How can I do it?
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what are the points and levels for on the apple communities

You mean these?
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I wouldn't consider 665 tips as being "hardly any", myself.
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null

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What is connect by and level pseudo column? how it works?

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