RUN-group processing in SAS/Graph procedures

In SAS packages, some procedures may support RUN-group processing, e.g. Proc CATALOG, Proc DATASETS in SAS/Base, Proc GPLOT, Proc GCHART in SAS/Graph and Proc REG in SAS/STAT, etc.

Basically, RUN-group processing is used to perform task interactivly and efficiently without restarting the procedure. It is very intersting that ONLY the ones in SAS/Graph can reset or cancel global and local statements, BY statements, WHERE statement.

* Sample Code;
proc sort data=sashelp.class out=class;
 by name;
run;
proc gplot data=class;
 where;
 by;
 title "All Subjects";
 plot height*weight;
run;
 where sex='M';
 by name;
 title "Male";
 plot height*weight;
run;
 where sex='F';
 by;
 title "Female";
 plot height*weight;
run;
quit;

For more information, please read SAS/GRAPH Processing: RUN-Group Processing.