Nemo for Debian is a way of managing files. Nemo for Debian is a cross between a calendar and a file browser with labels. When you start the application up the first time, it scans your home directory for files and displays them in the calendar view. It will then watch the files for changes (you can force a reindex with --reindex). If you want it to index something other than your homedir you can change the configuration in ~/.nemo/configuration.xml.