16 

    17 =head2 FCL features not yet in MCL (move this section before committing to MCL)

    18 

    19 =over 5

    20 

    21 =item *

    22 

    23 Fshell now reuses threads for built-in commands that execute in quick succession. The thread pool takes into account the requirements of the command when assigning a thread (eg whether it needs to share a heap with its parent command) and creates a new one if necessary. Excess threads are cleaned up after a short idle period (currently 1 second).

    24 

    25 =item *

    26 

    27 Commands can now define a C<==smoke-test> section in their CIF files, which defines a snippet of fshell script that will be run as part of C<fshell smoketest> or by invoking L<ciftest|commands::ciftest> directly. See the ciftest documentation for more details.

    28 

    29 =back