This model illustrates composite types in Ptolemy II. The
Record Assembler actor composes a string with an integer into
a record token, which is then passed through a channel that
has random delay. The tokens arrive possibly in another
order. The Record Disassembler actor separates the string
from the sequence number. The strings are displayed as
received (possible out of order), and resequenced by the
Sequencer actor, which puts them back in order. This example
demonstrates how types propagate through record composition
and decomposition.