This simple model illustrates various facilities
for reading files. The DirectoryListing actor outputs
an array containing the file names of files in a test
directory. There are three files in that directory,
each containing one line of text. The three file
names are handed to the CompositeActor, which has
a FilePortParameter. The file name becomes the value
of a fileName parameter, which is then used by the
FileReader actor. The FileReader actor reads the
contents of the three files, which are then displayed
by the Display actor. Note that the file names can
also (more simply) be fed directly to a FileReader actor.