{{key}} or sometimes {{key1.key2}}. Different templates are supported, depending on where you are using the template.{{user.first_name}} : The user's first name.{{user.last_name}} : The user's last name.{{user.email}} : The user's email address.{{entry}} : The overridden project entry or the current option (filename) from the project.{{localhost}} : The public URL of the container on port 8080 (the default port for the static file server in the starting directory, usually /home/nt-user/workspace).{{localhost:port}} : The public URL of the sandbox on port.{{hostname}}: The project's hostname, e.g. venerated-cockatoo-1232.{{test}} : The filename of the test (either the one generated or the one overridden by you).{{username}}: The username of the project (typically nt-user, although older content may be set to root).hello with their name to personalize their test results.