diff --git a/qse/lib/utl/sed.c b/qse/lib/utl/sed.c
index afc19573..0e9b85e0 100644
--- a/qse/lib/utl/sed.c
+++ b/qse/lib/utl/sed.c
@@ -319,6 +319,7 @@ qse_printf (QSE_T("command not recognized [%c]\n"), c);
 			break;
 
 		case QSE_T(':'):
+			cmd->type = c;
 			if (cmd->a1.type != QSE_SED_A_NONE)
 			{
 				/* label cannot have an address */
@@ -331,7 +332,7 @@ qse_printf (QSE_T("command not recognized [%c]\n"), c);
 			/* TODO: ... */
 			break;
 
-		case QSE_SED_CMD_EQ:
+		case QSE_T('='):
 			cmd->type = c;
 			if (cmd->a2.type != QSE_SED_A_NONE)
 			{
@@ -340,11 +341,12 @@ qse_printf (QSE_T("command not recognized [%c]\n"), c);
 			}
 			break;
 
-		case QSE_SED_CMD_A:
-		case QSE_SED_CMD_I:
-		case QSE_SED_CMD_C:
+		case QSE_T('a'):
+		case QSE_T('i'):
+		case QSE_T('c'):
 		{
 			cmd->type = c;
+
 			/* TODO: this check for  A and I
 			if (cmd->a2.type != QSE_SED_A_NONE)
 			{
@@ -387,60 +389,54 @@ qse_printf (QSE_T("%s%s"), ttt, QSE_STR_PTR(cmd->u.text));
 			break;
 		}
 
-		case QSE_T('g'):
-			break;
-
-		case QSE_T('G'):
+		case QSE_T('D'):
+			//cmd->u.label = pspace;
+		case QSE_T('d'):
+			cmd->type = c;
 			break;
 
 		case QSE_T('h'):
-			break;
-
 		case QSE_T('H'):
+		case QSE_T('g'):
+		case QSE_T('G'):
+		case QSE_T('l'):
+		case QSE_T('n'):
+		case QSE_T('N'):
+		case QSE_T('p'):
+		case QSE_T('P'):
+		case QSE_T('x'):
+			cmd->type = c;
 			break;
 
-		case QSE_T('t'):
-			break;
 
 		case QSE_T('b'):
 			break;
-
-		case QSE_T('n'):
+		case QSE_T('t'):
 			break;
 
-		case QSE_T('N'):
-			break;
-
-		case QSE_T('p'):
-			break;
-
-		case QSE_T('P'):
-			break;
 
 		case QSE_T('r'):
 			break;
-
-		case QSE_T('d'):
-			break;
-
-		case QSE_T('D'):
-			break;
-
-		case QSE_T('q'):
-			break;
-
-		case QSE_T('l'):
-			break;
-
-		case QSE_T('s'):
+		case QSE_T('R'):
 			break;
 
 		case QSE_T('w'):
 			break;
-
-		case QSE_T('x'):
+		case QSE_T('W'):
 			break;
 
+		case QSE_T('q'):
+		case QSE_T('Q'):
+			cmd->type = c;
+			if (cmd->a2.type != QSE_SED_A_NONE)
+			{
+				sed->errnum = QSE_SED_EA2PHB;
+				return -1;
+			}
+			break;
+
+		case QSE_T('s'):
+			break;
 		case QSE_T('y'):
 			break;
 	}
diff --git a/qse/lib/utl/sed.h b/qse/lib/utl/sed.h
index 85ee2dee..d53d0d42 100644
--- a/qse/lib/utl/sed.h
+++ b/qse/lib/utl/sed.h
@@ -53,7 +53,7 @@ struct qse_sed_c_t
 	{
 		qse_str_t* text;  
 		void* rex;
-		qse_sed_c_t* lbl; /* branch destination */
+		qse_sed_c_t* label; /* branch destination */
 	} u;	
 
 	qse_char_t* rhs; /* right-hand side of sustitution */
@@ -61,11 +61,48 @@ struct qse_sed_c_t
 	enum
 	{
 		QSE_SED_CMD_B   = QSE_T('b'), /* branch */
+		/* print current line number */
 		QSE_SED_CMD_EQ  = QSE_T('='), /* print current line number */
 
-		QSE_SED_CMD_A   = QSE_T('a'), /* append text */
-		QSE_SED_CMD_I   = QSE_T('i'), /* insert text */
-		QSE_SED_CMD_C   = QSE_T('c')  /* change text */
+		/* a \<\n> text - append text */
+		QSE_SED_CMD_A   = QSE_T('a'),
+		/* i \<\n> text - insert text */
+		QSE_SED_CMD_I   = QSE_T('i'),
+		/* c \<\n> text - change text */
+		QSE_SED_CMD_C   = QSE_T('c'),
+
+		QSE_SED_CMD_D   = QSE_T('d'), /* delete pattern space */
+		QSE_SED_CMD_DD  = QSE_T('D'),
+
+		QSE_SED_CMD_H   = QSE_T('h'),
+		QSE_SED_CMD_HH  = QSE_T('H'),
+		QSE_SED_CMD_G   = QSE_T('g'),
+		QSE_SED_CMD_GG  = QSE_T('G'),
+		/* list out current line */
+		QSE_SED_CMD_L   = QSE_T('l'),
+		QSE_SED_CMD_N   = QSE_T('n'),
+		QSE_SED_CMD_NN  = QSE_T('N'),
+		QSE_SED_CMD_P   = QSE_T('p'),
+		QSE_SED_CMD_PP  = QSE_T('P'),
+		/* exchange hold space and pattern space */
+		QSE_SED_CMD_X   = QSE_T('x'), 
+
+		/* r filename - append a text from a file */
+		QSE_SED_CMD_R   = QSE_T('r'),
+		/* R filename - append a line from a file */
+		QSE_SED_CMD_RR  = QSE_T('R'),
+
+		/* w filename - write pattern space to a file */
+		QSE_SED_CMD_W   = QSE_T('r'),
+		/* W filename - write first line of pattern space to a file */
+		QSE_SED_CMD_WW  = QSE_T('R'),
+
+		QSE_SED_CMD_Q   = QSE_T('q'),
+		QSE_SED_CMD_QQ  = QSE_T('Q'),
+
+		QSE_SED_CMD_S   = QSE_T('s'),
+		QSE_SED_CMD_Y   = QSE_T('y')
+
 	} type;
 
 	/* TODO: change the data type to a shorter one to save space */