http://tehbemfqolualhxwkyimu3bdob5s4hkrfuwbwxzbblncjy2j2owgolqd.onion/documentation.html
It is also possible to look up values using the ${ < expr > } syntax; when using this form, < expr > is first evaluated in the Python context, and the resulting value is used as a key into the mapping. It is also possible to access the entire mapping by looking up an ellipsis ${...} , which allows for different kinds of programmatic access: ~ $ x = 'TH' ~ $ ${'PA' + x}
['/usr/local/bin', '/usr/bin', '/bin', '/usr/games'] ~ $ ${...}