This example demonstrates the use of the predefined external functions in TTCN-3.

The behavior consists in reading the contents of "file_1.txt", writing them in "file_2.txt",
and displaying them in order and reverse order in the same radar graph (simulation only).

1. Simulation (using "file_1.txt" and "file_2.txt" in "MyFilesSimulation")
Execute "MyTest.ttcn3" with "Simulation options" profile.
Then run either the testcase or the control part.
When done a graph will be shown with the results, and "file_2.txt" will have 
the contents of "file_1.txt" and some info about its total number of lines.

2. Code generation (using "file_1.txt" and "file_2.txt" in "MyFilesCodeGeneration")
Run code generation on "MyTest.ttcn3" with one of the "Code generation ..." profiles.
Then launch the generated executable in the "ccg" directory in the project.
When done "file_2.txt" will have the contents of "file_1.txt" and some info 
about its total number of lines.
Note that graphs are not available in this case.
