resultssets in resultsframes in Stata 16-plus

It may be listed and saved in a disk file or written over an existing dataset in memory and (in Stata Versions 16 or higher) written to a data frame (or resultsframe) in the memory, without damaging any existing data frames. Commands creating resultssets include parmest, parmby, xcontract, xcollapse, descsave, xsvmat, and xdir. Commands useful for processing resultsframes include xframeappend, fraddinby, and invdesc. I survey the ways in which resultsset processing has been changed by resultsframes.