st class green threads (continuations)</li>
    <li>Python style generators (implemented as a plain macro)</li>
    <li>Mutable and immutable arrays (array/tuple)</li>
    <li>Mutable and immutable hashtables (table/struct)</li>
    <li>Mutable and immutable strings (buffer/string)</li>
    <li>Macros</li>
    <li>Byte code interpreter with an assembly interface, as well as bytecode verification</li>
    <li>Tail call optimization</li>
    <li>Direct interop with C via abstract types and C functions</li>
  