+Some macro behavior is controlled through the SET command
+(@pxref{SET}). This section describes these settings.
+
+Any SET command that changes these settings within a macro body only
+takes effect following the macro. This is because PSPP expands a
+macro's entire body at once, so that the SET command inside the body
+only executes afterwards.
+
+The MEXPAND setting (@pxref{SET MEXPAND}) controls whether macros will
+be expanded at all. By default, macro expansion is on. To avoid
+expansion of macros called within a macro body, use @code{!OFFEXPAND}
+and @code{!ONEXPAND} (@pxref{Controlling Macro Expansion}).
+
+When MPRINT (@pxref{SET MPRINT}) is turned on, PSPP logs an expansion
+of each macro in the input. This feature can be useful for debugging
+macro definitions.
+
+MNEST (@pxref{SET MNEST}) limits the depth of expansion of macro
+calls, that is, the nesting level of macro expansion.
+