Mine

index.php--------
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                | style.html ## contains styles. 
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                | /system/startup.php--------
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                                            | controller.php ## main controller. every other class is suppose to be extended off of it.
                                            +###########################################################################+                              
                                            +   __autoload ( 'filename' ) includes /sustem/core/libs.'filename'.php                               
                                            +                                               
                                            +  __getControllers('filename') includes /sustem/application/controllers.'filename'.php                         
                                            +                                                                     
                                            +  __getViews ( 'filename' ) includes /sustem/application/views.'filename'.php