/*	Datasignature and Saved Results	*/

/* Datasignature commands */
	datasignature set 	/* adds signature to dataset */ 
	datasignature confirm	/* checks signature on dataset */
	datasignature report	/* details changes to dataset */

/* Saved results commands */
	webuse auto, clear
	drop if (foreign==1)	
	regress price mpg length  /* run model on subset of data */
	estimates save domesticreg

	webuse auto, clear
	drop if (foreign!=1)
	estimates use domesticreg /* retrieve results from regression */ 
	regress
	regress price mpg length /* run model on different subset */