Once a revision has been displayed then the contents of that revision will be displayed in the Revision Browser panel. This acts as a simple file manager. Single left clicking on a file will display its contents and double left clicking on a directory will change into that directory.
Basically anything that could be accessed in a clean Monotone workspace can be accessed here. The file viewer is capable of displaying some image files, text files with syntax highlighting and if it is a file format that cannot be handled internally then it will display its MIME type followed by a hexadecimal dump of the file's contents. This behaviour can be controlled through a preference option (see Section 7.1).