+The @code{CTABLES} (aka ``custom tables'') command outputs
+multi-dimensional tables, offering many options for table
+summarization and formatting.
+
+@code{TABLE}, the only required subcommand, specifies the variables to
+include on each dimension, using the syntax @t{/TABLE} @i{rows} @t{BY}
+@i{columns} @t{BY} @i{layers}, in which @i{rows}, @i{columns}, and
+@i{layers} is each empty or an @i{axis}. The simplest form of
+@i{axis} is just a variable name.
+
+