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It is a property file, so it has a property name (also called a key) and its value in one line, separated with the equal sign (=), for example:
wlasnosc=wartosc
The file should only contain one line specifying the URL which defines the namespace in the metadata file. The key which identifies that URL is systemURL, for example:
systemURL=http://dlibra.psnc.pl/
The URL is usually the website address of the given digital library. The exported file will look as follows (we omit values – the point is to show the positions position of the value of the systemURL key):
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