-Earlier versions of varcon contained numerous errors. With version
-5.0 massive effort has been made to correct many of these errors.
-Clusters that have undergone some form of verification (and likely
-correction) are marked with "<verified>". As of version 5.0, most
-clusters with headwords word in common usage (SCOWL level 35 and
-below) should now be checked, as well as many others. No effort was
-made to check clusters with headwords in SCOWL level 80 and above;
-many of those entries are unlikely to be in the dictionary anyway.
+
+Varcon Columns
+--------------
+
+Varcon does not directly expresses the relation of words within a
+group as it is normally easy to derive. For example given a simple
+group of:
+ A: acknowledgment / B: acknowledgement
+ A: acknowledgments / B: acknowledgements
+ A: acknowledgment's / B: acknowledgement's
+it is clear that acknowledgments is the plural form of acknowledgment
+since they are both the American spelling of a word. While
+acknowledgEments is the plural form of acknowledgEment since they are
+both the British forms of a word. Within a group each varcon line
+is considered a row in a table and each entry within a line is considered
+a column. Within this group the first column is the American spelling
+and the second is the British.
+
+Sometime the column assignment unclear, when they are explicit column
+numbers may be given. For example:
+ A B: caulk / Av: calk / AV Bv 1: caulking / AV 2: calking | <N> :3
+ A B: caulks / Av: calks / AV Bv 1: caulkings / AV 2: calkings | <N> :3
+ A B: caulk's / Av: calk's / AV Bv 1: caulking's / AV 2: calking's | <N> :3
+
+Each column must contain exactly one spelling of the base form of a
+word, however a column may contain multiple derived forms for a single
+spelling of the base form, for example:
+ A B D 1: amoeba / Av Dv 2: ameba
+ A B D 1: amoebas / Av Bv Dv 1: amoebae / Av Dv 2: amebas / Av Dv 2: amebae
+ A B D 1: amoeba's / Av Dv 2: ameba's
+
+
+Additional Files
+================