+@table @asis
+@item Required attribute: @code{commandName}
+As on the @code{heading} element.
+
+@item Required attribute: @code{type}
+One of @code{table}, @code{note}, or @code{warning}.
+
+@item Required attribute: @code{subType}
+The locale-invariant name for the particular kind of output that this
+table represents in the procedure. This can be the same as
+@code{commandName} e.g.@: @code{Frequencies}, or different, e.g.@:
+@code{Case Processing Summary}. Generic subtypes @code{Notes} and
+@code{Warnings} are often used.
+
+@item Required attribute: @code{tableId}
+A number that uniquely identifies the table within the SPV file,
+typically a large negative number such as @code{-4147135649387905023}.
+
+@item Optional attribute: @code{creator-version}
+As on the @code{heading} element. In the corpus, this is only present
+for version 21 and up and always includes all 8 digits.
+@end table
+