Execution Mode

This dialog is used to specify the execution mode of this module.

When a module executes synchronously, it waits for new records on all of
its input pipes before executing.

When a module executes asynchronously, it only waits for a new record on
one of its input pipes before executing.  The pipes that did not receive
new records will use the last record value that had so the module can
execute properly.

Given the nature of Synchronous and Asynchronous execution, this dialog
is only needed if a module has two or more input ports as well as two or
more input pipes.  Otherwise, the module will always execute
synchronously.

RESET changes the execution mode back to what it was before this dialog
was popped up.
