# Rock manifest file format The `rock_manifest` file lists the files contained in a binary rock, with the MD5 checksum for each file. It is a Lua file containing a single global variable definition, that defines the variable **rock_manifest**, assigning to it a _table of file checksums_ of the [archive file's root directory](Rock file format) (except for the `rock_manifest` file itself). A table of file checksums is defined as a table describing a directory, where for each entry in the directory, there is a string key with its filename (only the basename). If the filename is a non-directory, the value of its key is a string with the MD5 checksum of the file. If the filename is a directory, the value of its key is itself a table of file checksums of that directory.