The ispCP Filestructure is:

/                 # Makefiles for all Operating Systems
 configs/         # Configuration Files
 contrib/         # 3rd Party Tools
 database/        # Database files for install
 docs/            # List of Packages and INSTALL (for all OS)
 engine/          # ispCP Perl Engine
 gui/             # Webinterface (GUI)
    admin/               # Admin PHP Files
    client/              # Client PHP Files
    domain_default_page/ # Domain Default Files (after Creation)
    errordocs/           # Error Documents
    include/             # Include Files (Functions ...)
    orderpanel/          # The ispCP Orderpanel
    phptmp/              # For temporary PHP files
    reseller/            # Reseller PHP Files
    themes/              # Styles (Themes)
    tools/               # ispCP Tools (PMA, Webmail, Filemanager)
 keys/            # Keys for encryption
 language-files   # Language Files
 tools/           # ispCP Daemon and Tools for Development
    deamon/              # ispCP Daemon
    translations/        # Tools for Translation Building