This file contains some general explanations.

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+$Id$
+
+This package contains a library that can read and write german DTAUS
+files.  DTAUS is an acronym for DatenTrägerAUStausch.  It is used by
+credit institutes in order to transfer commands for money exchange
+between accounts.
+
+DTAUS files use a special but simple and freely documented format.
+I've attached a written down version in dtaus.txt in this
+distribution.
+
+As DTAUS uses very long integer values you can't rely on regular C
+integer variables.  Therefore I've written a small library that acts
+on big integer numbers.  At the moment it only contains routines that
+are needed by dtaus but you're invited to improve it and send back
+appropriate patches to me.  The library is called bigint and can be
+found at ftp://ftp.infodrom.north.de/pub/clib/math/bigint-0.1.tar.gz
+
+You need to extract it into the same directory where the dtaus files
+are.  After that just run make and you should get an executable named
+dtaus.
+
+Supported Currency
+------------------
+
+At the moment the only currency supported is DM.  There are some hooks
+for supporting the new european currency Euro but it is not yet
+implemented.
+
+What needs to be done:
+
+ . Simple support for Euro in record A
+ . When writing records C and E, divert the field for amount
+ . Ignore specified currency for record C
+ . Reading dtaus, simple support for currency field
+ . When reading dtaus, divert the field for amount
+
+Good luck!
+