T("\n");
T("    B 	basic			BRE	(grep, ed, sed)\n");
T("    E 	REG_EXTENDED		ERE	(egrep)\n");
T("    A	REG_AUGMENTED		ARE	(egrep with negation)\n");
T("    S	REG_SHELL		SRE	(sh glob)\n");
T("    K	REG_SHELL|REG_AUGMENTED	KRE	(ksh glob)\n");
T("    L	REG_LITERAL		LRE	(fgrep)\n");
T("\n");
T("    a	REG_LEFT|REG_RIGHT	implicit ^...$\n");
T("    b	REG_NOTBOL		lhs does not match ^\n");
T("    c	REG_COMMENT		ignore space and #...\\n\n");

		//
		//     B 	basic			BRE	(grep, ed, sed)
		//     E 	REG_EXTENDED		ERE	(egrep)
		//     A	REG_AUGMENTED		ARE	(egrep with negation)
		//     S	REG_SHELL		SRE	(sh glob)
		//     K	REG_SHELL|REG_AUGMENTED	KRE	(ksh glob)
		//     L	REG_LITERAL		LRE	(fgrep)
		//
		//     a	REG_LEFT|REG_RIGHT	implicit ^...$
		//     b	REG_NOTBOL		lhs does not match ^
		//     c	REG_COMMENT		ignore space and #...\n