9 Documentation files

Sometimes it is desirable to document aspects of a package outside the source-files. For this reason the system creates a link to files using the extension .txt. The referenced file is processed as Wiki source. The two fragments below illustrate the relation between an .pl file and a .txt file.

%!      read_setup(+File, -Setup) is det.
%
%       Read application setup information from File.  The details
%       on setup are described in setup.txt.

---+ Application setup data

If a file =|.myapprc|= exists in the user's home directory the
application will process this data using setup.pl. ...