In the main folder we can see these folders and files.

assets/ A public folder that includes the assets from the packages, third party libraries, and media files that we upload.

log/ A private folder that save logs and the user sessions.

tmp/ A public folder with temporally files created.

src/ The folder of installed packages. Here is all the code of the system.

sites/ A folder that we can add more websites that share the same installation.

themes/ The folder of installed themes.

index.php The main index file. For any call, execution starts from here.

config.php The configuration file. It is generated after installation.