.. efun:: void throw(mixed message)

  Abort execution. If the current program execution was initiated by :efun:`catch`, that catch expression will return :arg:`message` as error code.

  Calling ``throw()`` without an enclosing ``catch()`` does not make sense and will result in a "Throw with no catch." error.

  .. todo:: since this type is mixed, the usage example should probably demonstrate how this will work with non-string args?

  .. usage::

    This will just print the string "aborting execution"::

      catch(throw("aborting execution"));

  .. seealso:: :efun:`catch`, :efun:`raise_error`