Open source osla, understanding can go online to search, it is worth a look

osla
....\commontool.inc
....\db.inc
....\dbmysql.inc
....\defaultobj.inc
....\index.php
....\login.inc
....\logout.inc
....\mysqldump.sql
....\useradmin.inc
....\userfile.inc
....\usermenu.inc
....\userhome.inc
....\manifest.inc
....\osla-banner2.jpg
....\shiporder.inc
....\.htaccess
....\graph
....\.....\class.graph.php
....\.....\PhpMyGraph_0.3.zip
....\country.inc
....\barcode
....\.......\image.php
....\.......\php_logo.gif
....\.......\barcode.php
....\.......\i25object.php
....\.......\home.png
....\.......\debug.php
....\.......\lesser.txt
....\.......\download.png
....\.......\sample.png
....\.......\home.php
....\.......\sample.php
....\.......\download.php
....\.......\linux.gif
....\.......\index.php
....\.......\image.png
....\.......\c39object.php
....\.......\spain.png
....\.......\c128aobject.php
....\.......\c128bobject.php
....\.......\c128cobject.php
....\.......\barcode-0.0.8a.tar.gz
....\labelprint.inc
....\commercialinvoice.inc
....\shiporderinvoice.inc
....\manifestlist.inc
....\chinesetraditional.jpg
....\shipmentstatistics.inc
....\servicesetting.inc
....\archive
....\.......\zip.inc
....\.......\zip.lib.php
....\shiporderservice.inc
....\shiporderserviceresponse.inc
....\english.jpg
....\chinesesimplified.jpg
....\dataanalysis.inc
....\shiporderservicedhl.inc
....\dhlwebshipvoid.inc
....\dhlwebshipcommon.inc
....\dhlwebshipshipping.inc
....\shiporderservicefedex.inc
....\shiporderserviceups.inc
....\upsecommercecommon.inc
....\upsecommerceshipping.inc
....\shiporderserviceresponsedhl.inc
....\shiporderserviceresponsefedex.inc
....\shiporderserviceresponseups.inc
....\shiporderserviceupsecommerce.inc
....\shiporderserviceresponseupsecommerce.inc

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