cryptop.list: Fix up the column-spec documentation.

It got a bit out of date with respect to the actual implementation.

diff --git a/cryptop.list b/cryptop.list
index c51f402..54380cc 100755 (executable)
--- a/cryptop.list
+++ b/cryptop.list
@@ -38,11 +38,16 @@ Options:
   -a           Show keys owned by all users.
   -u USER      Show keys owned by USER.
 
-A COLUMN spec consists of a column name and an optional column width,
-separated by a colon.  The widths of omitted columns are computed
-automatically.
-
-Columns:
+A COLUMN spec consists of a column name and an optional column width; the
+separator character determines the behaviour as shown below.  The default is
+\`+0'.
+  NAME=WIDTH   Exact width: truncate the contents to fit if necessary.
+  NAME:WIDTH   Minimum width: spill into the next column (breaking the
+                 alignment) if necessary.
+  NAME+WIDTH   Minimum width: if a value won't fit then make the entire
+                 column wider.
+
+Columns names:
   flags                Various flags for the key.  (Unset flags are shown as \`.')
                  R     key has recovery information
                  !     key nub needs recovery