The system.ExistsFile() system call returns 1 if a file or directory
exists, but returns 0 when the provided path ends with a directory
separator, regardless of whether a directory exists at that location.
This subtle difference in behavior caused problems in Pastel Chime 3.
HLL libraries are compiled into the executable rather than dynamically
loaded as in early versions of System 4. These days AliceSoft does the
same thing.
Building 'test/test.pje' with the SDK compiler produces a file at
'test/Run/test.ain' which can be run with xsystem4 to test various
features.
Not the greatest testing method, but it works.