Unitdi scans one or two Free Pascal unit source les and either lists all available identi ers, or describes the di erences in identi ers between the two units.
You can invoke unitdi with an input lename as the only required argument. It will then simply list all available identi ers.
The regular usage is to invoke unitdi with two arguments:
unitdiff input1 input2
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Invoked like this, it will show the di erence in interface between the two units, or list the available identi ers in both units. The output of unitdi will go to standard output by default.