JavaScript applications running in a browser don't have access to the host system's filesystem. Instead, the filesystem-related features of LiveCode, such as open file, use a virtual filesystem (VFS) that exists only in memory.
This filesystem is initialised before the engine starts, and is reset and its content discarded when the engine stops (when the user closes the browser view or navigates to a diļ¬erent page).
During engine startup, the VFS is populated from the contents of the standalone.zip file that's created by the Web deployment process. All of the initial files are stored in `/boot/` in the VFS.
There are several special files & directories in the `/boot/` directory: - `/boot/startup.data`: the standalone data including the mainstack, extensions and auxiliary stackfiles and startup script. - `/boot/standalone/`: the defaultFolder when the engine starts, and the location where additional assets selected using the "Copy files" page of the standalone builder are placed.
In general, if you wish to add new files or directories to the standalone.zip archive, it is best to add them outside the `/boot/` directory tree.