106 	*pfirst,		/* Pointer to beginning of line 	*/  variable
296 	if (plast - pfirst > MAXLINE) {  in center()
300 	if (pfirst < &work[NCOLS]) {  in center()
301 		tlast = plast + (&work[NCOLS] - pfirst);  in center()
303 		while (plast >= pfirst) *tlast-- = *plast--;  in center()
304 		pfirst = ++tlast;  in center()
309 		while (pfirst <= plast) *tfirst++ = *pfirst++;  in center()
311 		pfirst = tptr;  in center()
700 		pfirst = plast = &work[NCOLS];  in process()
712 				if (lp->param <= (plast - pfirst))  in process()
718 					    (plast - pfirst));  in process()
725 				if (lp->param <= (plast - pfirst))  in process()
731 					    (plast - pfirst));  in process()
755 		(void) fputs(pfirst, stdout);  in process()
763 	if (plast - pfirst < effll) {  in append()
764 		n = n ? n : effll - (plast - pfirst);  in append()
776 	if (plast - pfirst < effll) {  in prepend()
777 		n = n ? n : effll - (plast - pfirst);  in prepend()
778 		if (pfirst - n < wfirst) center();  in prepend()
779 		while (n--) *--pfirst = pachar;  in prepend()
788 	if (plast - pfirst > effll) {  in begtrunc()
789 		n = n ? n : plast - pfirst - effll;  in begtrunc()
790 		pfirst += n;  in begtrunc()
791 		if (pfirst >= plast)  in begtrunc()
792 			*(pfirst = plast = &work[NCOLS]) = '\n';  in begtrunc()
801 	if (plast - pfirst > effll) {  in endtrunc()
802 		n = n ? n : plast - pfirst - effll;  in endtrunc()
804 		if (pfirst >= plast)  in endtrunc()
805 			*(pfirst = plast = &work[NCOLS]) = '\n';  in endtrunc()
825 	while (pfirst <= plast) {  in inputtabs()
827 		switch (c = *pfirst++) {  in inputtabs()
846 	pfirst = tfirst;  in inputtabs()
868 	c = pfirst;  in sstrip()
879 	c = pfirst;  in sstrip()
884 	pfirst = ++savec;		/* Point pfirst to char after tab */  in sstrip()
909 	tfirst = tlast = pfirst;  in outputtabs()
911 	while (pfirst <= plast) {  in outputtabs()
913 		switch (c = *pfirst++) {  in outputtabs()
929 				} while (*pfirst++ == ' ');  in outputtabs()
930 			pfirst--;  in outputtabs()
938 	pfirst = tfirst;  in outputtabs()