This would just be a bit of syntactic sugar that hopefully would provide a performance improvement over a JSL for loop. Currently there is only the ability to change one column name at a time. With the latest changes to JMP 14 I find myself hitting APIs more often. Unlike SQL I can't easily change the column name in the data pull. It would be nice to just change all the column names at once after pulling my data. I think this would improve user friendliness as well since most of the << Get statements have a corresponding << Set statement.