diff --git a/.Docs/KERNEL.md b/.Docs/KERNEL.md
index ca85d0b0..14e20873 100644
--- a/.Docs/KERNEL.md
+++ b/.Docs/KERNEL.md
@@ -61,7 +61,7 @@ X = DevID
 # GetDevStatus  
 
 ## C   
-`int getdevstatus(short int hDEV, S.DIB* dstat);`  
+`int getdevstatus(short int DevID, S.DIB* dstat);`  
 
 ## ASM  
 `>PUSHWI S.DIB`  
@@ -803,6 +803,9 @@ Specifiers :
 + \f : Print 'FF' ($0C,12)  
 + \n : Print 'LF' ($0A,10)  
 + \r : Print 'CR' ($0D,13)  
++ \t : Print 'TAB' ($09,09)  
++ \v : Print 'VT' ($0B,11)  
++ \xHH : Print byte with hexadecimal value HH (1 to 2 digits)  
 + \\\\ : Print \  
 + \\% : Print %  
 
diff --git a/.Floppies/A2OSX.BUILD.po b/.Floppies/A2OSX.BUILD.po
index 5cf58cb6..02543a7f 100644
Binary files a/.Floppies/A2OSX.BUILD.po and b/.Floppies/A2OSX.BUILD.po differ
diff --git a/BIN/SH.S.CORE.txt b/BIN/SH.S.CORE.txt
index ba981590..add8855a 100644
--- a/BIN/SH.S.CORE.txt
+++ b/BIN/SH.S.CORE.txt
@@ -17,6 +17,8 @@ CORE.Quit		>LDA.G CORE.hArgVBuf
 
 .9				rts	
 *--------------------------------------
+* http://heirloom.sourceforge.net/sh/sh.1.html
+*--------------------------------------
 * Input : ZPArgVBuf (String)
 * Tokenize ZPArgVBuf
 * :LOOP
@@ -61,16 +63,21 @@ CORE.Run		>LDYA ZPInputBufPtr		Save Actual cmd for looping
 				jsr CORE.GetCharNB
 				bcs .9					Ending 0, CS,A=0
 				
-				cmp #'#'				commented line?
+				cmp #C.CR
+				beq .80					empty line ?
+				
+.10				cmp #'#'				commented line?
 				bne .2
 
 .1				jsr CORE.GetNextCharNB
-				bcs .8					A=0
-				eor #C.CR
-				bne .1
-				jsr CORE.GetNextChar
+				bcs .8					EOF
+				cmp #C.CR
+				bne .1					EOL
+				
+.80				jsr CORE.GetNextChar	skip CR...
 
-.8				clc
+.8				lda #0
+				clc
 .9				rts						EOL, CS,A=0
 				
 .2				cmp #'|'
@@ -141,10 +148,24 @@ CORE.ExecCmd	jsr CORE.GetNextCharNB	Skip EoL char
 
 CORE.ExecCmd.1	lda #0
 				sta (ZPArgVBufPtr)
+				
+				jsr CORE.StkGet			IF,WHILE,FOR ?
+				bcs .3					no particular context, exec...
+				tax
+				
+				>LDA.G CORE.IntCmd
+				bmi .2					external ...
+				
+				and #$3F
+				cmp #C.FOR
+				bcs .3					FOR...FI : always execute
+		
+.2				txa
+				bpl .8 					context is FALSE, skip line
+				asl
+				bpl .8					parent context is FALSE, skip line
 
-				
-				
-				>LDYA ZPArgVBuf
+.3				>LDYA ZPArgVBuf
 				>STYA ZPArgVBufPtr
 
 				>LDA.G CORE.IntCmd
@@ -153,6 +174,9 @@ CORE.ExecCmd.1	lda #0
 
 				jmp (J.CMD,x)
 
+.8				clc
+				rts
+				
 CORE.ExecExtCmd	>PUSHB.G CORE.PSFlags
 				>LDYA ZPArgVBuf
 				>SYSCALL execv
@@ -314,6 +338,9 @@ CORE.ArgV.NextChar
 CORE.ArgV.Next	lda (ZPArgVBufPtr)
 				beq .8
 				
+				>LDYA ZPArgVBufPtr
+				>STYA ZPArgVBufPrev
+				
 .1				jsr CORE.ArgV.NextChar
 				lda (ZPArgVBufPtr)
 				bne .1
diff --git a/BIN/SH.S.EXP.txt b/BIN/SH.S.EXP.txt
index c93264e7..8418be94 100644
--- a/BIN/SH.S.EXP.txt
+++ b/BIN/SH.S.EXP.txt
@@ -80,7 +80,7 @@ EXP.TEST		lda (ZPArgVBufPtr)
 				jsr CORE.ArgV.Next
 				beq .9
 
-				>LDYA L.EXP.OP.UNARY	-d -e -f ?
+				>LDYA L.EXP.OP.UNARY	-d -e -f -n -z ?
 				jsr CORE.LookupArgVBuf
 
 				bcs .1
@@ -93,8 +93,8 @@ EXP.TEST		lda (ZPArgVBufPtr)
 				
 				>EOR.G CORE.Test
 				sta (pData),y
-				
-				bra .8					go check ]
+				lda (ZPArgVBufPtr)
+				bra .80					go check ]
 
 .9				lda #E.ESYN
 				sec
@@ -118,7 +118,7 @@ EXP.TEST		lda (ZPArgVBufPtr)
 .8				jsr CORE.ArgV.Next
 				beq .9
 				
-				cmp #']'
+.80				cmp #']'
 				bne .9
 				
 				ldy #1
@@ -128,13 +128,14 @@ EXP.TEST		lda (ZPArgVBufPtr)
 				rts
 *--------------------------------------
 EXP.TEST.UNARY 	jsr CORE.ArgV.Next
-				beq .9					we need one arg
+				beq EXP.OP.UNARY.ESYN	we need one arg or ]
 				
 				>LDA.G CORE.Operator
 				tax
 				jmp (J.EXP.OP.UNARY,x)
 
-.9				lda #E.ESYN
+EXP.OP.UNARY.ESYN
+				lda #E.ESYN
 				sec
 				rts
 				
@@ -161,6 +162,10 @@ EXP.OP.UNARY.DEF.7
 				>PUSHEA.G StatBuf
 				>LDYA ZPArgVBufPtr
 				>SYSCALL STAT
+				php
+	
+				jsr CORE.ArgV.Next
+				plp
 				rts
 			
 EXP.OP.UNARY.DEF.8	
@@ -173,6 +178,22 @@ EXP.OP.UNARY.DEF.9
 				clc
 				rts
 *--------------------------------------
+EXP.OP.UNARY.N	lda (ZPArgVBufPtr)		[ -N ] ?
+				cmp #']'
+				beq EXP.OP.UNARY.DEF.9	FALSE
+				
+				jsr CORE.ArgV.Next
+				beq EXP.OP.UNARY.ESYN
+				bra EXP.OP.UNARY.DEF.8	arg is not empty TRUE
+				 
+EXP.OP.UNARY.Z	lda (ZPArgVBufPtr)		[ -Z ] ?
+				cmp #']'
+				beq EXP.OP.UNARY.DEF.8	TRUE
+				
+				jsr CORE.ArgV.Next
+				beq EXP.OP.UNARY.ESYN
+				bra EXP.OP.UNARY.DEF.9	FALSE
+*--------------------------------------
 EXP.TEST.BINARY	>LDA.G CORE.Operator
 				beq .1					=
 
@@ -184,7 +205,7 @@ EXP.TEST.BINARY	>LDA.G CORE.Operator
 .1				jsr CORE.ArgV.Next
 				beq .9
 				
-				>PUSHW ZPPtr1
+				>PUSHW ZPArgVBufPrev
 				>LDYA ZPArgVBufPtr
 				>SYSCALL strcmp
 				ror						CS if !=
@@ -199,15 +220,15 @@ EXP.TEST.BINARY	>LDA.G CORE.Operator
 				rts
 *--------------------------------------
 EXP.TEST.BINARY.NUM
-				jsr CORE.ArgV.Next
-				beq .9
-				
-				>LDYA ZPPtr1
+				>LDYA ZPArgVBufPrev
 				>SYSCALL AToL
 				bcs .9
 
 				>PULLL.G M32.ACC
 				
+				jsr CORE.ArgV.Next
+				beq .9
+				
 				>LDYA ZPArgVBufPtr
 				>SYSCALL AToL
 				bcs .9
diff --git a/BIN/SH.S.IO.txt b/BIN/SH.S.IO.txt
index 0ec20b29..e05a8810 100644
--- a/BIN/SH.S.IO.txt
+++ b/BIN/SH.S.IO.txt
@@ -97,42 +97,54 @@ IO.Reset.Err	>LDA.G IO.hErr
 .8				rts
 *--------------------------------------
 IO.PrintBatchErrMsg
-				>LDA.G hInputBuf
-				>SYSCALL GetMemPtr
+				>LDYA ZPInputBuf
 				>STYA ZPPtr1
 				
-				stz ZPPtr3
-				stz ZPPtr3+1
+				stz ZPPtr2				Line Count
+				stz ZPPtr2+1
 
-.1				>LDYA ZPPtr1
-				>STYA ZPPtr2			Save actual line start
-				
-				inc ZPPtr3
+.1				inc ZPPtr2
 				bne .2
-				inc ZPPtr3+1
+				inc ZPPtr2+1
 
-.2				lda (ZPPtr1)
-				beq .6					EoF
-				inc ZPPtr1
-				bne .3
-				inc ZPPtr1+1
+.2				ldy #$ff
+
+.3				iny
+				lda (ZPPtr1),y
+				beq .4					EoF
+
+				cmp #C.CR
+				bne .3					Scan until EoL
 				
-.3				cmp #$0D
-				bne .2					Scan until EoL
-				
-				ldx ZPPtr1
-				cpx ZPInputBufPtr
+.4				tya
+				clc
+				adc ZPPtr1
+				tax
 				lda ZPPtr1+1
+				adc #0
+				pha
+
+				cpx ZPInputBufPtr
 				sbc ZPInputBufPtr+1
-				bcc .1					not this line....
+				pla
+				bcs .41
+				
+				inx
+				bne .40
+				inc
+.40				stx ZPPtr1
+				sta ZPPtr1+1
+				bra .1
 
-.4				ldy #0
+.41				ldy #$ff
 
-.5				lda (ZPPtr2),y
+.5				iny
+				lda (ZPPtr1),y
 				beq .6
-				iny
-				cmp #$0D
+
+				cmp #C.CR
 				beq .6
+
 				phy
 				>PUSHA
 				ldy #S.PS.hStdErr
@@ -147,22 +159,24 @@ IO.PrintBatchErrMsg
 				lda (pPS),y
 				>SYSCALL fprintf
 
-				lda ZPInputBufPtr
-				sec
-				sbc ZPPtr2
-				beq .8
-				tay
+				ldy #$ff
 
-.7				phy
+.7				iny
+				lda (ZPPtr1),y
+				beq .8
+
+				cmp #C.CR
+				beq .8
+
+				phy
 				>PUSHBI '-'
 				ldy #S.PS.hStdErr
 				lda (pPS),y
 				>SYSCALL fputc
 				ply
-				dey
-				bne .7
+				bra .7
 				
-.8				>PUSHW ZPPtr3
+.8				>PUSHW ZPPtr2
 				
 				>PUSHBI 2
 				>PUSHW L.MSG.BATCHERR
diff --git a/BIN/SH.S.txt b/BIN/SH.S.txt
index f169940c..45cc9970 100644
--- a/BIN/SH.S.txt
+++ b/BIN/SH.S.txt
@@ -153,6 +153,8 @@ L.EXP.OP.UNARY	.DA EXP.OP.UNARY
 J.EXP.OP.UNARY	.DA EXP.OP.UNARY.D
 				.DA EXP.OP.UNARY.E
 				.DA EXP.OP.UNARY.F
+				.DA EXP.OP.UNARY.N
+				.DA EXP.OP.UNARY.Z
 L.EXP.OP.BINARY	.DA EXP.OP.BINARY
 L.EXP.OP.MATH	.DA EXP.OP.MATH
 J.EXP.OP.MATH	.DA M32.Add
@@ -583,6 +585,8 @@ EXP.BEGIN		.AZ "!["
 EXP.OP.UNARY	.AZ "-D"
 				.AZ "-E"
 				.AZ "-F"
+				.AZ "-N"
+				.AZ "-Z"
 				.HS 00
 EXP.OP.BINARY	.AZ "="
 				.AZ "!="
diff --git a/SYS/KERNEL.S.STDIO.txt b/SYS/KERNEL.S.STDIO.txt
index 6396db8a..1521c603 100644
--- a/SYS/KERNEL.S.STDIO.txt
+++ b/SYS/KERNEL.S.STDIO.txt
@@ -160,6 +160,9 @@ K.FPutS			jsr PFT.CheckNodeA		set IO.hFD
 * + \f : Print 'FF' ($0C,12)
 * + \n : Print 'LF' ($0A,10)
 * + \r : Print 'CR' ($0D,13)
+* + \t : Print 'TAB' ($09,09)
+* + \v : Print 'VT' ($0B,11)
+* + \xHH : Print byte with hexadecimal value HH (1 to 2 digits)
 * + \\\\ : Print \
 * + \\% : Print %
 * Modifiers for len and padding : 
@@ -202,14 +205,14 @@ K.PrintF.1		stz PrintF.Cnt
 .1				jsr MEM.GetCharPtr1
 				beq .8					end of format..
 
-				cmp #'%'
+.22				cmp #'%'
 				bne .10
 						
 				stz K.PrintF.PadL
 				lda #' '
 				sta K.PrintF.PadC
 				
-.2				ldx	#PrintFTBL2-PrintFTBL1-1
+.2				ldx	#PrintFTBL1.Cnt-1
 				jsr MEM.GetCharPtr1
 				beq .99
 				
@@ -268,20 +271,35 @@ K.PrintF.1		stz PrintF.Cnt
 .10				cmp #'\'
 				bne .20
 				
-				ldx	#PrintFTBL2.OUT-PrintFTBL2-1
 				jsr MEM.GetCharPtr1
 				beq .99
 				
+				ldx	#PrintFTBL2.Cnt-1
+				
 .12				cmp PrintFTBL2,x
-				beq .13
+				beq .19
 				dex
 				bpl	.12
-				bra .1
+
+				cmp #'x'
+				bne .1
 				
-.13				lda	PrintFTBL2.OUT,x	
+				>LDYA ZPPtr1
+				>STYA ZPPtr2
+
+				jsr STDLIB.GetHex
+				bcs .99
+				
+				jsr MEM.AddYToPtr1
+				
+.14				lda HEXBUF
+				bra .20
+				
+.19				lda	PrintFTBL2.OUT,x
 
 .20				jsr	PrintF.COut
-				bcc	.1
+				bcs	.99
+				jmp .1
 				
 .99				php
 				pha
@@ -307,8 +325,10 @@ PrintF.ESC		jmp	(.1,x)
 				.DA PrintF.S,PrintF.SS
 *--------------------------------------
 PrintFTBL1		.AS	"bBdDuefhHiILnNsS"
-PrintFTBL2		.AS	"befnr\%"
-PrintFTBL2.OUT	.HS 08.1B.0C.0A.0D		\b\e\f\n\r
+PrintFTBL1.Cnt	.EQ *-PrintFTBL1
+PrintFTBL2		.AS	"befnrtv\%"
+PrintFTBL2.Cnt	.EQ *-PrintFTBL2
+PrintFTBL2.OUT	.HS 08.1B.0C.0A.0D.09.0B		\b\e\f\n\r\t\v
 				.DA #'\'				\\
 				.DA #'%'				\%
 *--------------------------------------
diff --git a/SYS/KERNEL.S.STDLIB.txt b/SYS/KERNEL.S.STDLIB.txt
index 5b22cb99..878cc70b 100644
--- a/SYS/KERNEL.S.STDLIB.txt
+++ b/SYS/KERNEL.S.STDLIB.txt
@@ -145,7 +145,7 @@ STDLIB.GetHex	lda (ZPPtr2)
 				
 				sta STDLIB.32
 				
-				ldy #$ff
+				ldy #0
 				
 .1				iny
 				lda (ZPPtr2),y
@@ -177,7 +177,7 @@ STDLIB.GetHex	lda (ZPPtr2)
 * Convert Decimal int at ZPPtr2 to STDLIB.32
 *--------------------------------------
 STDLIB.GetDec	jsr STDLIB.32.Clear
-				
+
 				ldy #$ff
 
 .1				iny