Role Hirerchy grahical view under security console for new role creation?

Summary:

Role Hirerchy grahical view under security console for new role creation?

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Hi Team,

Can some one will help me to understand the role hirerchy for copy top role and copy top role inherited by options.

So, I am taking one seeded job role name called "Payroll Manager", and I can perform both the copy top role and copy top role inherited by options.

Under role hirerchy tab with graphical view

Copy Top Role :

Role          1    

Predefined Role     96

Aggregate Privilege   58

Copy Top Role Inherited BY:

Role          53

Predefined Role     44

Aggregate Privilege   58

Can some one will help me to understand this one, I have so much of confusion in this from long term.