The following statements are available in the BOXPLOT procedure:
PROC BOXPLOT options;
BY variables;
ID variables;
INSET keywords </ options>;
INSETGROUP keywords </ options>;
PLOT analysis-variable *group-variable <(block-variables)> <=symbol-variable> </ options >;
Both the PROC BOXPLOT and PLOT statements are required. You can specify any number of PLOT statements within a single PROC BOXPLOT invocation.