diff --git a/Binary/Apps/Clean.cmd b/Binary/Apps/Clean.cmd
index 36816f7f..cdb0ee32 100644
--- a/Binary/Apps/Clean.cmd
+++ b/Binary/Apps/Clean.cmd
@@ -2,7 +2,6 @@
 setlocal
 
 if exist *.com del *.com
-
 if exist *.ovr del *.ovr
 if exist *.doc del *.doc
 if exist *.hlp del *.hlp
diff --git a/Source/Apps/FDU/Build.cmd b/Source/Apps/FDU/Build.cmd
index 7594c95c..e7bb0742 100644
--- a/Source/Apps/FDU/Build.cmd
+++ b/Source/Apps/FDU/Build.cmd
@@ -8,4 +8,4 @@ set TASMTABS=%TOOLS%\tasm32
 tasm -t80 -b -fFF fdu.asm fdu.com fdu.lst || exit /b
 
 copy /Y fdu.com ..\..\..\Binary\Apps\ || exit /b
-copy /Y fdu.txt ..\..\..\Doc\ || exit /b
\ No newline at end of file
+copy /Y fdu.doc ..\..\..\Binary\Apps\ || exit /b
diff --git a/Source/Apps/FDU/Makefile b/Source/Apps/FDU/Makefile
index caeb2ea3..8ea7ff0b 100644
--- a/Source/Apps/FDU/Makefile
+++ b/Source/Apps/FDU/Makefile
@@ -1,7 +1,7 @@
 OBJECTS = fdu.com
-DOCS = fdu.txt
+DOCS = fdu.doc
 DEST = ../../../Binary/Apps
-DOCDEST = ../../../Doc
+DOCDEST = ../../../Binary/Apps
 TOOLS = ../../../Tools
 include $(TOOLS)/Makefile.inc
 
diff --git a/Source/Apps/FDU/fdu.txt b/Source/Apps/FDU/fdu.doc
similarity index 100%
rename from Source/Apps/FDU/fdu.txt
rename to Source/Apps/FDU/fdu.doc
diff --git a/Source/BPBIOS/cboot-ww.z80 b/Source/BPBIOS/cboot-ww.z80
index 77b535d9..1d13f2b5 100644
--- a/Source/BPBIOS/cboot-ww.z80
+++ b/Source/BPBIOS/cboot-ww.z80
@@ -475,7 +475,7 @@ ENV1:				; ZCPR3 enviornment descriptor ...
 	DEFB	0		; Crt selection			()
 	DEFB	0		; Printer selection		()
 	DEFB	80		; Crt 0: width
-	DEFB	24		; # of lines
+	DEFB	25		; # of lines
 	DEFB	22		; # of text lines
 
 ; In Extended ENV, CRT 1 is replaced by System Info
diff --git a/Source/Images/d_bp.txt b/Source/Images/d_bp.txt
index 8d410fda..356c5c07 100644
--- a/Source/Images/d_bp.txt
+++ b/Source/Images/d_bp.txt
@@ -13,6 +13,7 @@
 ../../Binary/Apps/assign.com 15:
 ../../Binary/Apps/fat.com 15:
 ../../Binary/Apps/fdu.com 15:
+../../Binary/Apps/fdu.doc 15:
 ../../Binary/Apps/format.com 15:
 ../../Binary/Apps/mode.com 15:
 ../../Binary/Apps/rtc.com 15:
diff --git a/Source/Images/d_bp/u15/d.com b/Source/Images/d_bp/u15/d.com
index 190089c5..73b22bd4 100644
Binary files a/Source/Images/d_bp/u15/d.com and b/Source/Images/d_bp/u15/d.com differ
diff --git a/Source/Images/d_bp/u15/poke.com b/Source/Images/d_bp/u15/poke.com
new file mode 100644
index 00000000..7861f558
Binary files /dev/null and b/Source/Images/d_bp/u15/poke.com differ
diff --git a/Source/Images/d_bp/u15/ql.com b/Source/Images/d_bp/u15/ql.com
index 25dd41a2..f5a9c68c 100644
Binary files a/Source/Images/d_bp/u15/ql.com and b/Source/Images/d_bp/u15/ql.com differ
diff --git a/Source/Images/d_bp/u15/save.com b/Source/Images/d_bp/u15/save.com
new file mode 100644
index 00000000..59f9d77f
Binary files /dev/null and b/Source/Images/d_bp/u15/save.com differ
diff --git a/Source/Images/d_bp/u15/sd.com b/Source/Images/d_bp/u15/sd.com
index 286e19a0..49fc2f64 100644
Binary files a/Source/Images/d_bp/u15/sd.com and b/Source/Images/d_bp/u15/sd.com differ
diff --git a/Source/Images/d_cpm22.txt b/Source/Images/d_cpm22.txt
index 41b7907c..6c9810d9 100644
--- a/Source/Images/d_cpm22.txt
+++ b/Source/Images/d_cpm22.txt
@@ -9,6 +9,7 @@ d_cpm22/ReadMe.txt 0:
 ../../Binary/Apps/assign.com 0:
 ../../Binary/Apps/fat.com 0:
 ../../Binary/Apps/fdu.com 0:
+../../Binary/Apps/fdu.doc 0:
 ../../Binary/Apps/format.com 0:
 ../../Binary/Apps/mode.com 0:
 ../../Binary/Apps/rtc.com 0:
diff --git a/Source/Images/d_cpm3.txt b/Source/Images/d_cpm3.txt
index e3f5b26d..cf1e0335 100644
--- a/Source/Images/d_cpm3.txt
+++ b/Source/Images/d_cpm3.txt
@@ -25,13 +25,14 @@
 ../../Binary/Apps/assign.com 0:
 ../../Binary/Apps/fat.com 0:
 ../../Binary/Apps/fdu.com 0:
+../../Binary/Apps/fdu.doc 0:
 ../../Binary/Apps/format.com 0:
 ../../Binary/Apps/mode.com 0:
 ../../Binary/Apps/rtc.com 0:
 ../../Binary/Apps/survey.com 0:
 ../../Binary/Apps/syscopy.com 0:
-../../Binary/Apps/sysgen.com 0:
-../../Binary/Apps/talk.com 0:
+#../../Binary/Apps/sysgen.com 0:
+#../../Binary/Apps/talk.com 0:
 ../../Binary/Apps/timer.com 0:
 ../../Binary/Apps/tune.com 0:
 ../../Binary/Apps/xm.com 0:
diff --git a/Source/Images/d_nzcom.txt b/Source/Images/d_nzcom.txt
index cea46e38..3e1a2c3c 100644
--- a/Source/Images/d_nzcom.txt
+++ b/Source/Images/d_nzcom.txt
@@ -26,6 +26,7 @@ d_zsdos/u0/*.* 0:
 ../../Binary/Apps/assign.com 0:
 ../../Binary/Apps/fat.com 0:
 ../../Binary/Apps/fdu.com 0:
+../../Binary/Apps/fdu.doc 0:
 ../../Binary/Apps/format.com 0:
 ../../Binary/Apps/mode.com 0:
 ../../Binary/Apps/rtc.com 0:
diff --git a/Source/Images/d_zpm3.txt b/Source/Images/d_zpm3.txt
index 9813ea22..7ef5d483 100644
--- a/Source/Images/d_zpm3.txt
+++ b/Source/Images/d_zpm3.txt
@@ -24,6 +24,7 @@
 ../../Binary/Apps/assign.com 15:
 ../../Binary/Apps/fat.com 15:
 ../../Binary/Apps/fdu.com 15:
+../../Binary/Apps/fdu.doc 15:
 ../../Binary/Apps/format.com 15:
 ../../Binary/Apps/mode.com 15:
 ../../Binary/Apps/rtc.com 15:
diff --git a/Source/Images/d_zsdos.txt b/Source/Images/d_zsdos.txt
index 8c4631df..247ed7d7 100644
--- a/Source/Images/d_zsdos.txt
+++ b/Source/Images/d_zsdos.txt
@@ -22,6 +22,7 @@ d_cpm22/u0/XSUB.COM 0:
 ../../Binary/Apps/assign.com 0:
 ../../Binary/Apps/fat.com 0:
 ../../Binary/Apps/fdu.com 0:
+../../Binary/Apps/fdu.doc 0:
 ../../Binary/Apps/format.com 0:
 ../../Binary/Apps/mode.com 0:
 ../../Binary/Apps/rtc.com 0:
diff --git a/Source/ver.inc b/Source/ver.inc
index 9ad1a1d5..e9f27c76 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	1
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.1.1-pre.123"
+#DEFINE BIOSVER	"3.1.1-pre.124"
diff --git a/Source/ver.lib b/Source/ver.lib
index 9a85635a..2845a2a5 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	1
 rup	equ	1
 rtp	equ	0
 biosver	macro
-	db	"3.1.1-pre.123"
+	db	"3.1.1-pre.124"
 	endm